diff --git a/Gremlin/ErrorHandler.cs b/Gremlin/ErrorHandler.cs
index 03a2054..85ddb8e 100644
--- a/Gremlin/ErrorHandler.cs
+++ b/Gremlin/ErrorHandler.cs
@@ -21,9 +21,14 @@ namespace Gremlin
 			Debug.WriteLine(ex.Message);
 		}
 
-		internal static void ShowMessageBox(string message)
+		public static void ShowErrorMessage(string message)
 		{
 			_ = MessageBox.Show(message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
 		}
+
+		public static void ShowInfoMessage(string message)
+		{
+			_ = MessageBox.Show(message, "Info", MessageBoxButton.OK, MessageBoxImage.Information);
+		}
 	}
 }
diff --git a/Gremlin/GremlinData/DBClasses/GenericImporter.cs b/Gremlin/GremlinData/DBClasses/GenericImporter.cs
index a7669fb..e3fe2ad 100644
--- a/Gremlin/GremlinData/DBClasses/GenericImporter.cs
+++ b/Gremlin/GremlinData/DBClasses/GenericImporter.cs
@@ -6,7 +6,6 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
-using System.Reflection;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
diff --git a/Gremlin/MVVM/Operations/PDFHandler.cs b/Gremlin/MVVM/Operations/PDFHandler.cs
index 4dea234..ba06152 100644
--- a/Gremlin/MVVM/Operations/PDFHandler.cs
+++ b/Gremlin/MVVM/Operations/PDFHandler.cs
@@ -7,23 +7,32 @@ namespace Gremlin.Operations
 {
 	internal class PDFHandler
 	{
-		public static void CreatePDF(QuoteViewModel quoteVM)
+		public static bool CreatePDF(QuoteViewModel quoteVM)
 		{
 			//Copy images to quotePath
-			if (quoteVM.QuotePath is "" or null)
+			try
 			{
-				File.WriteAllBytes("agilentLogo.png", Properties.Resources.agilentLogo);
-				File.WriteAllBytes("signWoitschetzki.png", Properties.Resources.signWoitschetzki);
+				if (quoteVM.QuotePath is "" or null)
+				{
+					File.WriteAllBytes("agilentLogo.png", Properties.Resources.agilentLogo);
+					File.WriteAllBytes("signWoitschetzki.png", Properties.Resources.signWoitschetzki);
+				}
+				else
+				{
+					File.WriteAllBytes($"{quoteVM.QuotePath}agilentLogo.png", Properties.Resources.agilentLogo);
+					File.WriteAllBytes($"{quoteVM.QuotePath}signWoitschetzki.png", Properties.Resources.signWoitschetzki);
+				}
+	
+				//Create PDF twice
+				RunningPDFLaTeX(quoteVM, 2);
+				RemoveTempFiles(quoteVM.QuotePath);
+				return true;
 			}
-			else
+			catch (Exception ex)
 			{
-				File.WriteAllBytes($"{quoteVM.QuotePath}agilentLogo.png", Properties.Resources.agilentLogo);
-				File.WriteAllBytes($"{quoteVM.QuotePath}signWoitschetzki.png", Properties.Resources.signWoitschetzki);
+				ErrorHandler.ShowErrorInMessageBox(ex);
+				return false;
 			}
-
-			//Create PDF twice
-			RunningPDFLaTeX(quoteVM, 2);
-			RemoveTempFiles(quoteVM.QuotePath);
 		}
 
 		public static void RemoveTempFiles(string quotePath)
diff --git a/Gremlin/MVVM/Operations/TexHandler.cs b/Gremlin/MVVM/Operations/TexHandler.cs
index 91b51d2..b17819e 100644
--- a/Gremlin/MVVM/Operations/TexHandler.cs
+++ b/Gremlin/MVVM/Operations/TexHandler.cs
@@ -10,7 +10,7 @@ namespace Gremlin.MVVM
 {
 	internal class TexHandler
 	{
-		internal static void CreateTexAndOpen(QuoteViewModel quoteVM)
+		internal static int CreateTexAndOpen(QuoteViewModel quoteVM)
 		{
 			StringBuilder texStringBuilder = CreateTexFile(quoteVM);
 
@@ -22,6 +22,8 @@ namespace Gremlin.MVVM
 			{
 				WriteTextToFile(texStringBuilder, $"{quoteVM.QuotePath}{quoteVM.QuoteNumber}.tex");
 			}
+
+			return texStringBuilder.Length;
 		}
 
 		private static void WriteTextToFile(StringBuilder texFile, string datei)
diff --git a/Gremlin/MVVM/ViewModels/ContactViewModel.cs b/Gremlin/MVVM/ViewModels/ContactViewModel.cs
index 595ad89..c030ffd 100644
--- a/Gremlin/MVVM/ViewModels/ContactViewModel.cs
+++ b/Gremlin/MVVM/ViewModels/ContactViewModel.cs
@@ -11,23 +11,23 @@ namespace Gremlin.MVVM
 {
 	public class ContactViewModel : PropertyChangedBase
 	{
-		private Enums.Gender _gender = Enums.Gender.Male;
-		private string _firstName = "firstName";
-		private string _lastName = "lastName";
-		private string _eMail = "email@email.de";
-		private string _accountName = "accountName";
-		private string _accountStreet = "accountStreet";
-		private uint _accountZIP;
-		private string _accountCity = "accountCity";
-
-		public Enums.Gender Gender { get => _gender; set { _gender = value; NotifyOfPropertyChange(() => Gender); } }
-		public string FirstName { get => _firstName; set { _firstName = value; NotifyOfPropertyChange(() => FirstName); } }
-		public string LastName { get => _lastName; set { _lastName = value; NotifyOfPropertyChange(() => LastName); } }
-		public string EMail { get => _eMail; set { _eMail = value; NotifyOfPropertyChange(() => EMail); } }
-		public string AccountName { get => _accountName; set { _accountName = value; NotifyOfPropertyChange(() => AccountName); } }
-		public string AccountStreet { get => _accountStreet; set { _accountStreet = value; NotifyOfPropertyChange(() => AccountStreet); } }
-		public uint AccountZIP { get => _accountZIP; set { _accountZIP = value; NotifyOfPropertyChange(() => AccountZIP); } }
-		public string AccountCity { get => _accountCity; set { _accountCity = value; NotifyOfPropertyChange(() => AccountCity); } }
+		private Enums.Gender gender = Enums.Gender.Male;
+		private string firstName = "firstName";
+		private string lastName = "lastName";
+		private string eMail = "email@email.de";
+		private string accountName = "accountName";
+		private string accountStreet = "accountStreet";
+		private uint accountZIP;
+		private string accountCity = "accountCity";
+
+		public Enums.Gender Gender { get => gender; set { gender = value; NotifyOfPropertyChange(() => Gender); } }
+		public string FirstName { get => firstName; set { firstName = value; NotifyOfPropertyChange(() => FirstName); } }
+		public string LastName { get => lastName; set { lastName = value; NotifyOfPropertyChange(() => LastName); } }
+		public string EMail { get => eMail; set { eMail = value; NotifyOfPropertyChange(() => EMail); } }
+		public string AccountName { get => accountName; set { accountName = value; NotifyOfPropertyChange(() => AccountName); } }
+		public string AccountStreet { get => accountStreet; set { accountStreet = value; NotifyOfPropertyChange(() => AccountStreet); } }
+		public uint AccountZIP { get => accountZIP; set { accountZIP = value; NotifyOfPropertyChange(() => AccountZIP); } }
+		public string AccountCity { get => accountCity; set { accountCity = value; NotifyOfPropertyChange(() => AccountCity); } }
 
 		public ContactViewModel() { }
 
diff --git a/Gremlin/MVVM/ViewModels/LineItemViewModel.cs b/Gremlin/MVVM/ViewModels/LineItemViewModel.cs
index 885408b..a881c8d 100644
--- a/Gremlin/MVVM/ViewModels/LineItemViewModel.cs
+++ b/Gremlin/MVVM/ViewModels/LineItemViewModel.cs
@@ -8,29 +8,29 @@ namespace Gremlin.MVVM
 {
 	public class LineItemViewModel : PropertyChangedBase
 	{
-		private ushort _position;
-		private ushort _amount;
-		private string _productNumber;
-		private string _optionNumber;
-		private string _sapShortDescription;
-		private CustomDescriptionViewModel _customDescriptionVM;
-		private string _productLine;
-		private decimal _totalDiscount;
-		private decimal _calcNetPrice;
-		private decimal _calcTotalNet;
-		private decimal _listPrice;
-
-		public ushort Position { get => _position; set { _position = value; NotifyOfPropertyChange(() => Position); } }
-		public ushort Amount { get => _amount; set { _amount = value; NotifyOfPropertyChange(() => Amount); } }
-		public string ProductNumber { get => _productNumber; set { _productNumber = value; NotifyOfPropertyChange(() => ProductNumber); } }
-		public string OptionNumber { get => _optionNumber; set { _optionNumber = value; NotifyOfPropertyChange(() => OptionNumber); } }
-		public string SapShortDescription { get => _sapShortDescription; set { _sapShortDescription = value; NotifyOfPropertyChange(() => SapShortDescription); } }
-		public CustomDescriptionViewModel CustomDescriptionVM { get => _customDescriptionVM; set { _customDescriptionVM = value; NotifyOfPropertyChange(() => CustomDescriptionVM); } }
-		public string ProductLine { get => _productLine; set { _productLine = value; NotifyOfPropertyChange(() => ProductLine); } }
-		public decimal TotalDiscount { get => _totalDiscount; set { _totalDiscount = value; NotifyOfPropertyChange(() => TotalDiscount); } }
-		public decimal CalcNetPrice { get => _calcNetPrice; set { _calcNetPrice = value; NotifyOfPropertyChange(() => CalcNetPrice); } }
-		public decimal CalcTotalNet { get => _calcTotalNet; set { _calcTotalNet = value; NotifyOfPropertyChange(() => CalcTotalNet); } }
-		public decimal ListPrice { get => _listPrice; set { _listPrice = value; NotifyOfPropertyChange(() => ListPrice); } }
+		private ushort position;
+		private ushort amount;
+		private string productNumber;
+		private string optionNumber;
+		private string sapShortDescription;
+		private CustomDescriptionViewModel customDescriptionVM;
+		private string productLine;
+		private decimal totalDiscount;
+		private decimal calcNetPrice;
+		private decimal calcTotalNet;
+		private decimal listPrice;
+
+		public ushort Position { get => position; set { position = value; NotifyOfPropertyChange(() => Position); } }
+		public ushort Amount { get => amount; set { amount = value; NotifyOfPropertyChange(() => Amount); } }
+		public string ProductNumber { get => productNumber; set { productNumber = value; NotifyOfPropertyChange(() => ProductNumber); } }
+		public string OptionNumber { get => optionNumber; set { optionNumber = value; NotifyOfPropertyChange(() => OptionNumber); } }
+		public string SapShortDescription { get => sapShortDescription; set { sapShortDescription = value; NotifyOfPropertyChange(() => SapShortDescription); } }
+		public CustomDescriptionViewModel CustomDescriptionVM { get => customDescriptionVM; set { customDescriptionVM = value; NotifyOfPropertyChange(() => CustomDescriptionVM); } }
+		public string ProductLine { get => productLine; set { productLine = value; NotifyOfPropertyChange(() => ProductLine); } }
+		public decimal TotalDiscount { get => totalDiscount; set { totalDiscount = value; NotifyOfPropertyChange(() => TotalDiscount); } }
+		public decimal CalcNetPrice { get => calcNetPrice; set { calcNetPrice = value; NotifyOfPropertyChange(() => CalcNetPrice); } }
+		public decimal CalcTotalNet { get => calcTotalNet; set { calcTotalNet = value; NotifyOfPropertyChange(() => CalcTotalNet); } }
+		public decimal ListPrice { get => listPrice; set { listPrice = value; NotifyOfPropertyChange(() => ListPrice); } }
 
 		internal static ObservableCollection<LineItemViewModel> ReadLineItemsFromClipboard()
 		{
diff --git a/Gremlin/MVVM/ViewModels/ShellViewModel.cs b/Gremlin/MVVM/ViewModels/ShellViewModel.cs
index 20ff2b5..c4f3c21 100644
--- a/Gremlin/MVVM/ViewModels/ShellViewModel.cs
+++ b/Gremlin/MVVM/ViewModels/ShellViewModel.cs
@@ -6,7 +6,6 @@ using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
-using System.Diagnostics;
 using System.Linq;
 
 namespace Gremlin.MVVM
@@ -18,6 +17,9 @@ namespace Gremlin.MVVM
 		private ObservableCollection<ContactViewModel> contacts;
 		private QuoteViewModel quoteVM;
 		private string searchContact;
+		private bool quoteReady;
+		private bool texCreated;
+		private bool pdfCreated;
 
 		public string SearchContact {
 			get => searchContact;
@@ -25,42 +27,18 @@ namespace Gremlin.MVVM
 				searchContact = value;
 				NotifyOfPropertyChange(() => SearchContact);
 				Contacts = GetContactsVM(searchContact);
+				QuoteReady = CheckQuoteReady();
 			}
 		}
 
-		public ContactViewModel ContactVM {
-			get => contactVM;
-			set {
-				contactVM = value;
-				NotifyOfPropertyChange(() => ContactVM);
-			}
-		}
-
-		public QuoteViewModel QuoteVM {
-			get => quoteVM;
-			set {
-				quoteVM = value;
-				NotifyOfPropertyChange(() => QuoteVM);
-			}
-		}
+		public ContactViewModel ContactVM { get => contactVM; set { contactVM = value; NotifyOfPropertyChange(() => ContactVM); } }
+		public QuoteViewModel QuoteVM { get => quoteVM; set { quoteVM = value; NotifyOfPropertyChange(() => QuoteVM); QuoteReady = CheckQuoteReady(); } }
 
-		public ContactViewModel SelectedContact {
-			get => selectedContact;
-			set {
-				selectedContact = value;
-				NotifyOfPropertyChange(() => SelectedContact);
-				QuoteVM.Recipient = value;
-				NotifyOfPropertyChange(() => QuoteVM.Recipient);
-			}
-		}
-
-		public ObservableCollection<ContactViewModel> Contacts {
-			get => contacts;
-			set {
-				contacts = value;
-				NotifyOfPropertyChange(() => Contacts);
-			}
-		}
+		public ContactViewModel SelectedContact { get => selectedContact; set { selectedContact = value; NotifyOfPropertyChange(() => SelectedContact); QuoteVM.Recipient = value; NotifyOfPropertyChange(() => QuoteVM.Recipient); } }
+		public ObservableCollection<ContactViewModel> Contacts { get => contacts; set { contacts = value; NotifyOfPropertyChange(() => Contacts); } }
+		public bool QuoteReady { get => quoteReady; set { quoteReady = value; NotifyOfPropertyChange(() => QuoteReady); } }
+		public bool TexCreated { get => texCreated; set { texCreated = value; NotifyOfPropertyChange(() => TexCreated); } }
+		public bool PDFCreated { get => pdfCreated; set { pdfCreated = value; NotifyOfPropertyChange(() => PDFCreated); } }
 
 		public ShellViewModel()
 		{
@@ -97,15 +75,36 @@ namespace Gremlin.MVVM
 			}
 		}
 
+		private bool CheckQuoteReady()
+		{
+			return QuoteVM.LineItemsVM.Count != 0 && QuoteVM.Recipient.LastName != "lastName";
+		}
+
 		public void CreateTex()
 		{
-			TexHandler.CreateTexAndOpen(QuoteVM);
-			Debug.WriteLine(quoteVM.TotalListprice);
+			if (QuoteVM.LineItemsVM.Count == 0)
+			{
+				ErrorHandler.ShowErrorMessage("Das Angebot enthält keine LineItems.\nBitte zuerst ein Angebot einfügen.");
+			}
+			else
+			{
+				if (QuoteVM.Recipient.LastName != "lastName")
+				{
+					int texFileLength = TexHandler.CreateTexAndOpen(QuoteVM);
+					ErrorHandler.ShowInfoMessage($"Es wurde ein texFile mit {texFileLength} Zeichen erstellt.");
+					TexCreated = true;
+				}
+				else
+				{
+					ErrorHandler.ShowErrorMessage("Bitte wähle zuerst einen Kunden aus!");
+				}
+			}
+
 		}
 
 		public void CreatePDF()
 		{
-			PDFHandler.CreatePDF(QuoteVM);
+			PDFCreated = PDFHandler.CreatePDF(QuoteVM);
 		}
 
 		public void OpenPDF()
diff --git a/Gremlin/MVVM/Views/ShellView.xaml b/Gremlin/MVVM/Views/ShellView.xaml
index a9765ae..1ebf8eb 100644
--- a/Gremlin/MVVM/Views/ShellView.xaml
+++ b/Gremlin/MVVM/Views/ShellView.xaml
@@ -16,9 +16,9 @@
         <!--<local1:ContactView cal:Bind.Model="{Binding ContactsVM}"/>-->
         <local:QuoteView cal:Bind.Model="{Binding QuoteVM}"/>
         <StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">
-            <Button x:Name="CreateTex" Content="TexFile erzeugen" Margin="10,5,10,5"/>
-            <Button x:Name="CreatePDF" Content="PDF erzeugen" Margin="10,5,10,5"/>
-            <Button x:Name="OpenPDF" Content="PDF öffnen" Margin="10,5,10,5"/>
+            <Button x:Name="CreateTex" Content="TexFile erzeugen" Margin="10,5,10,5" IsEnabled="{Binding Path=QuoteReady}"/>
+            <Button x:Name="CreatePDF" Content="PDF erzeugen" Margin="10,5,10,5" IsEnabled="{Binding Path=TexCreated}"/>
+            <Button x:Name="OpenPDF" Content="PDF öffnen" Margin="10,5,10,5" IsEnabled="{Binding Path=PDFCreated}"/>
         </StackPanel>
     </StackPanel>
 </UserControl>
\ No newline at end of file