Index: /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/ErrorHandling.cs
===================================================================
--- /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/ErrorHandling.cs	(revision 5983)
+++ /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/ErrorHandling.cs	(revision 5984)
@@ -25,18 +25,16 @@
 namespace HeuristicLab.PluginInfrastructure {
   public static class ErrorHandling {
-    public static readonly string NewLine = Environment.NewLine;
-
     public static string BuildErrorMessage(Exception exception) {
       if (exception == null) {
         return string.Empty;
       } else {
-        string message = exception.GetType().Name + ": " + exception.Message + NewLine +
+        string message = exception.GetType().Name + ": " + exception.Message + Environment.NewLine +
                          exception.StackTrace;
 
         while (exception.InnerException != null) {
           exception = exception.InnerException;
-          message += NewLine +
-                     "-----" + NewLine +
-                     exception.GetType().Name + ": " + exception.Message + NewLine +
+          message += Environment.NewLine +
+                     "-----" + Environment.NewLine +
+                     exception.GetType().Name + ": " + exception.Message + Environment.NewLine +
                      exception.StackTrace;
         }
@@ -53,4 +51,5 @@
     public static void ShowErrorDialog(string message, Exception exception) {
       using (ErrorDialog dialog = new ErrorDialog(message, exception)) {
+        dialog.StartPosition = FormStartPosition.CenterScreen;
         dialog.ShowDialog();
       }
Index: /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/FrameworkVersionWarning.Designer.cs
===================================================================
--- /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/FrameworkVersionWarning.Designer.cs	(revision 5984)
+++ /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/FrameworkVersionWarning.Designer.cs	(revision 5984)
@@ -0,0 +1,123 @@
+﻿#region License Information
+/* HeuristicLab
+* Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+*
+* This file is part of HeuristicLab.
+*
+* HeuristicLab is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * HeuristicLab is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+namespace HeuristicLab.PluginInfrastructure {
+  partial class FrameworkVersionWarning {
+    /// <summary>
+    /// Required designer variable.
+    /// </summary>
+    private System.ComponentModel.IContainer components = null;
+
+    /// <summary>
+    /// Clean up any resources being used.
+    /// </summary>
+    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+    protected override void Dispose(bool disposing) {
+      if (disposing && (components != null)) {
+        components.Dispose();
+      }
+      base.Dispose(disposing);
+    }
+
+    #region Windows Form Designer generated code
+
+    /// <summary>
+    /// Required method for Designer support - do not modify
+    /// the contents of this method with the code editor.
+    /// </summary>
+    private void InitializeComponent() {
+      this.iconLabel = new System.Windows.Forms.Label();
+      this.okButton = new System.Windows.Forms.Button();
+      this.linkLabel = new System.Windows.Forms.LinkLabel();
+      this.label1 = new System.Windows.Forms.Label();
+      this.SuspendLayout();
+      // 
+      // iconLabel
+      // 
+      this.iconLabel.Image = global::HeuristicLab.PluginInfrastructure.Resources.Error;
+      this.iconLabel.Location = new System.Drawing.Point(12, 9);
+      this.iconLabel.Name = "iconLabel";
+      this.iconLabel.Size = new System.Drawing.Size(21, 22);
+      this.iconLabel.TabIndex = 1;
+      // 
+      // okButton
+      // 
+      this.okButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+      this.okButton.DialogResult = System.Windows.Forms.DialogResult.OK;
+      this.okButton.Location = new System.Drawing.Point(206, 102);
+      this.okButton.Name = "okButton";
+      this.okButton.Size = new System.Drawing.Size(75, 23);
+      this.okButton.TabIndex = 6;
+      this.okButton.Text = "&Close";
+      this.okButton.UseVisualStyleBackColor = true;
+      this.okButton.Click += new System.EventHandler(this.cancelButton_Click);
+      // 
+      // linkLabel
+      // 
+      this.linkLabel.AutoSize = true;
+      this.linkLabel.Location = new System.Drawing.Point(39, 66);
+      this.linkLabel.Name = "linkLabel";
+      this.linkLabel.Size = new System.Drawing.Size(210, 13);
+      this.linkLabel.TabIndex = 9;
+      this.linkLabel.TabStop = true;
+      this.linkLabel.Text = ".NET framework v4.0 (full profile) download";
+      this.linkLabel.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel_LinkClicked);
+      // 
+      // label1
+      // 
+      this.label1.Location = new System.Drawing.Point(39, 9);
+      this.label1.Name = "label1";
+      this.label1.Size = new System.Drawing.Size(255, 33);
+      this.label1.TabIndex = 10;
+      this.label1.Text = ".NET framework version 4.0 (full profile) is not properly installed. Please downl" +
+          "oad and install it.";
+      // 
+      // FrameworkVersionWarning
+      // 
+      this.AcceptButton = this.okButton;
+      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+      this.CancelButton = this.okButton;
+      this.ClientSize = new System.Drawing.Size(293, 137);
+      this.Controls.Add(this.label1);
+      this.Controls.Add(this.linkLabel);
+      this.Controls.Add(this.okButton);
+      this.Controls.Add(this.iconLabel);
+      this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+      this.Icon = global::HeuristicLab.PluginInfrastructure.Resources.HeuristicLab;
+      this.MaximizeBox = false;
+      this.MinimizeBox = false;
+      this.Name = "FrameworkVersionWarning";
+      this.ShowInTaskbar = false;
+      this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
+      this.Text = "Warning";
+      this.ResumeLayout(false);
+      this.PerformLayout();
+
+    }
+
+    #endregion
+
+    private System.Windows.Forms.Label iconLabel;
+    private System.Windows.Forms.Button okButton;
+    private System.Windows.Forms.LinkLabel linkLabel;
+    private System.Windows.Forms.Label label1;
+  }
+}
Index: /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/FrameworkVersionWarning.cs
===================================================================
--- /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/FrameworkVersionWarning.cs	(revision 5984)
+++ /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/ErrorHandling/FrameworkVersionWarning.cs	(revision 5984)
@@ -0,0 +1,42 @@
+﻿#region License Information
+/* HeuristicLab
+ * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 *
+	 * HeuristicLab is distributed in the hope that it will be useful,
+	 * but WITHOUT ANY WARRANTY; without even the implied warranty of
+	 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	 * GNU General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+	 */
+#endregion
+using System;
+using System.Windows.Forms;
+
+namespace HeuristicLab.PluginInfrastructure {
+  public partial class FrameworkVersionWarning : Form {
+    public FrameworkVersionWarning() {
+      InitializeComponent();
+    }
+
+    private void linkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) {
+      try {
+        System.Diagnostics.Process.Start("http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=0a391abd-25c1-4fc0-919f-b21f31ab88b7");
+        linkLabel.LinkVisited = true;
+      }
+      catch (Exception) { }
+    }
+
+    private void cancelButton_Click(object sender, EventArgs e) {
+      Application.Exit();
+    }
+  }
+}
Index: /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/HeuristicLab.PluginInfrastructure-3.3.csproj
===================================================================
--- /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/HeuristicLab.PluginInfrastructure-3.3.csproj	(revision 5983)
+++ /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/HeuristicLab.PluginInfrastructure-3.3.csproj	(revision 5984)
@@ -221,4 +221,10 @@
     <Compile Include="BaseClasses\PluginBase.cs" />
     <Compile Include="DefaultApplicationManager.cs" />
+    <Compile Include="ErrorHandling\FrameworkVersionWarning.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="ErrorHandling\FrameworkVersionWarning.Designer.cs">
+      <DependentUpon>FrameworkVersionWarning.cs</DependentUpon>
+    </Compile>
     <Compile Include="ErrorHandling\ErrorDialog.cs">
       <SubType>Form</SubType>
Index: /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/Main.cs
===================================================================
--- /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/Main.cs	(revision 5983)
+++ /trunk/sources/HeuristicLab.PluginInfrastructure/3.3/Main.cs	(revision 5984)
@@ -34,11 +34,18 @@
     /// <param name="args">Command line arguments</param>
     public static void Run(string[] args) {
-      try {
+      bool fullProfileInstalled = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("Software\\Microsoft\\NET Framework Setup\\NDP\\v4\\Full") != null;
+      if (!fullProfileInstalled) {
         Application.EnableVisualStyles();
         Application.SetCompatibleTextRenderingDefault(false);
-        Application.Run(new StarterForm());
-      }
-      catch (Exception ex) {
-        ErrorHandling.ShowErrorDialog(ex);
+        Application.Run(new FrameworkVersionWarning());
+      } else {
+        try {
+          Application.EnableVisualStyles();
+          Application.SetCompatibleTextRenderingDefault(false);
+          Application.Run(new StarterForm());
+        }
+        catch (Exception ex) {
+          ErrorHandling.ShowErrorDialog(ex);
+        }
       }
     }
