diff --git a/java/bundles/org.eclipse.set.feature.table/src/org/eclipse/set/feature/table/internal/TableServiceImpl.java b/java/bundles/org.eclipse.set.feature.table/src/org/eclipse/set/feature/table/internal/TableServiceImpl.java
index b668d98aa1..114c3d45fd 100644
--- a/java/bundles/org.eclipse.set.feature.table/src/org/eclipse/set/feature/table/internal/TableServiceImpl.java
+++ b/java/bundles/org.eclipse.set.feature.table/src/org/eclipse/set/feature/table/internal/TableServiceImpl.java
@@ -728,7 +728,7 @@ public Table createDiffTable(final TableInfo tableInfo,
 		} catch (final Exception e) {
 			logger.error("Transformation Error: {} : {}", //$NON-NLS-1$
 					tableInfo.shortcut(), e.getMessage());
-			tableStatus.setNonTransformable(true);
+			tableStatus.setErrorMessages(e.getMessage());
 			broker.post(Events.TABLEERROR_CHANGED, null);
 			// Give empty table back
 			return createEmptyTable(tableInfo);
diff --git a/java/bundles/org.eclipse.set.services/src/org/eclipse/set/services/table/TableStatus.java b/java/bundles/org.eclipse.set.services/src/org/eclipse/set/services/table/TableStatus.java
index f850cb7e42..9e94137bed 100644
--- a/java/bundles/org.eclipse.set.services/src/org/eclipse/set/services/table/TableStatus.java
+++ b/java/bundles/org.eclipse.set.services/src/org/eclipse/set/services/table/TableStatus.java
@@ -10,6 +10,8 @@
  */
 package org.eclipse.set.services.table;
 
+import java.util.Optional;
+
 /**
  * The status of the Pt1 table by each table state/control area
  * 
@@ -19,7 +21,7 @@ public class TableStatus {
 	private boolean containsErrors;
 	private boolean containsStateChanged;
 	private boolean containsPlanChanged;
-	private boolean nonTransformable;
+	private Optional<String> errorMessages;
 	private boolean isEmpty;
 
 	/**
@@ -36,7 +38,7 @@ public void reset() {
 		containsErrors = false;
 		containsPlanChanged = false;
 		containsStateChanged = false;
-		nonTransformable = false;
+		errorMessages = Optional.empty();
 		isEmpty = false;
 	}
 
@@ -89,15 +91,15 @@ public void setContainsPlanChanged(final boolean containsPlanChanged) {
 	 * @return true, if table non transformable
 	 */
 	public boolean isNonTransformable() {
-		return nonTransformable;
+		return errorMessages.isPresent();
 	}
 
 	/**
-	 * @param nonTransformable
-	 *            true, if table non transformable
+	 * @param errorMessages
+	 *            the error messages by table transformation
 	 */
-	public void setNonTransformable(final boolean nonTransformable) {
-		this.nonTransformable = nonTransformable;
+	public void setErrorMessages(final String errorMessages) {
+		this.errorMessages = Optional.ofNullable(errorMessages);
 	}
 
 	/**
diff --git a/java/bundles/org.eclipse.set.utils.table/src/org/eclipse/set/utils/table/sorting/CompareRouteAndKmCriterion.java b/java/bundles/org.eclipse.set.utils.table/src/org/eclipse/set/utils/table/sorting/CompareRouteAndKmCriterion.java
index a62a89b5a8..bcf846c503 100644
--- a/java/bundles/org.eclipse.set.utils.table/src/org/eclipse/set/utils/table/sorting/CompareRouteAndKmCriterion.java
+++ b/java/bundles/org.eclipse.set.utils.table/src/org/eclipse/set/utils/table/sorting/CompareRouteAndKmCriterion.java
@@ -222,6 +222,9 @@ public int compareKm(final Set<String> firstKms,
 	}
 
 	private boolean kmPatternCheck(final String km) {
+		if (km == null) {
+			return true;
+		}
 		final Matcher matcher = PunktObjektStreckeExtensions.KILOMETRIERUNG_PATTERN
 				.matcher(km);
 		if (!matcher.matches()) {
diff --git a/java/bundles/org.eclipse.set.utils/src/org/eclipse/set/utils/widgets/Banderole.java b/java/bundles/org.eclipse.set.utils/src/org/eclipse/set/utils/widgets/Banderole.java
index a33a180b06..978aaf7f24 100644
--- a/java/bundles/org.eclipse.set.utils/src/org/eclipse/set/utils/widgets/Banderole.java
+++ b/java/bundles/org.eclipse.set.utils/src/org/eclipse/set/utils/widgets/Banderole.java
@@ -139,6 +139,9 @@ public boolean isOutdated() {
 	 *            whether to enable the export button
 	 */
 	public void setEnableExport(final boolean enabled) {
+		if (exportButton.isDisposed()) {
+			return;
+		}
 		exportButton.setEnabled(enabled);
 	}