distinguish between warnings and errors.

de.prob.core/src/de/prob/logging/Logger.java

@@ -78,7 +78,8 @@ public final class Logger {
 	/**
 	 * Check a property. The method notifies the user and throws an exception if
 	 * the assertion fails. <br>
-	 * <b>Examples:</b><br>{@code Logger.assertProB(this.getClass(),"x != null", x
+	 * <b>Examples:</b><br>
+	 * {@code Logger.assertProB(this.getClass(),"x != null", x
 	 * != null); } <br>
 	 * {@code Logger.assertProB(this.getClass(),"x should not be null", x != null); }
 	 * <br>
@@ -112,7 +113,8 @@ public final class Logger {
 
 	/**
 	 * Failed assertion. The method notifies the user and throws an exception. <br>
-	 * <b>Examples:</b><br>{@code if (!file.exists()) String message =
+	 * <b>Examples:</b><br>
+	 * {@code if (!file.exists()) String message =
 	 * "Called open on nonexisting file " + file;
 	 * Logger.assertProB(EditorPlugin.class, message); }
 	 * 
@@ -149,4 +151,8 @@ public final class Logger {
 	private static void log(final IStatus status) {
 		Activator.getDefault().getLog().log(status);
 	}
+
+	public static void notifyUserAboutWarningWithoutBugreport(String string) {
+		log(IStatus.WARNING, NOBUGREPORT, string, null);
+	}
 }

de.prob.ui/src/de/prob/ui/eventb/StartAnimationHandler.java

@@ -70,15 +70,22 @@ public class StartAnimationHandler extends AbstractHandler implements IHandler {
 		final IEventBRoot rootElement = getRootElement();
 		final IFile resource = extractResource(rootElement);
 
-		List<String> errors = checkErrorMarkers(resource);
+		ArrayList<String> errors = new ArrayList<String>();
+		boolean realError = checkErrorMarkers(resource, errors);
 		if (!errors.isEmpty()) {
-			String message = "A model/context in your project contains Errors or Warnings. This can lead to unexpected behavior (e.g. missing variables) when animating.\ns\nDetails:\n";
+			String message = "Some components in your project contain "
+					+ (realError ? "errors" : "warnings")
+					+ ". This can lead to unexpected behavior (e.g. missing variables) when animating.\n\nDetails:\n";
 			StringBuffer stringBuffer = new StringBuffer(message);
 			for (String string : errors) {
 				stringBuffer.append(string);
 				stringBuffer.append('\n');
 			}
+			if (realError)
 				Logger.notifyUserWithoutBugreport(stringBuffer.toString());
+			else
+				Logger.notifyUserAboutWarningWithoutBugreport(stringBuffer
+						.toString());
 		}
 		;
 
@@ -99,8 +106,8 @@ public class StartAnimationHandler extends AbstractHandler implements IHandler {
 		return null;
 	}
 
-	private List<String> checkErrorMarkers(final IFile resource) {
-		List<String> errors = new ArrayList<String>();
+	private boolean checkErrorMarkers(final IFile resource, List<String> errors) {
+		boolean result = false;
 		IProject project = resource.getProject();
 		try {
 			IMarker[] markers = project.findMarkers(
@@ -111,12 +118,13 @@ public class StartAnimationHandler extends AbstractHandler implements IHandler {
 						+ ": "
 						+ iMarker
 								.getAttribute(IMarker.MESSAGE, "unknown Error"));
+				result = result
+						|| (Integer) iMarker.getAttribute(IMarker.SEVERITY) == IMarker.SEVERITY_ERROR;
 			}
 
 		} catch (CoreException e1) {
 		}
-
-		return errors;
+		return result;
 	}
 
 	private IEventBRoot getRootElement() {

de.prob.ui/src/de/prob/ui/ticket/ProBLogListener.java

@@ -30,12 +30,13 @@ public final class ProBLogListener implements ILogListener {
 			final boolean bugreport = false; // ;code == Logger.BUGREPORT;
 			display.asyncExec(new Runnable() {
 				public void run() {
+					String title = (status.getSeverity() == IStatus.ERROR) ? "An Error occured"
+							: "Warning";
 					// Notice: ErrorTICKETDialog to provide Bugreport-Button
 					ErrorTicketDialog.openError(display.getActiveShell(),
-							"Error", "An error occured.", status, bugreport);
+							"ProB Problem", title, status, bugreport);
 				}
-			}
-			);
+			});
 		}
 
 		display.asyncExec(new Runnable() {