diff --git a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLExportConverter_1_ITest.java b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLExportConverter_1_ITest.java
index cd33a3557b..5ace48c575 100644
--- a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLExportConverter_1_ITest.java
+++ b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLExportConverter_1_ITest.java
@@ -88,19 +88,4 @@ public void testExport_3() {
 			assertTrue("TypeCastException", true);
 		}
 	}
-
-	public void testExport_4() {
-
-		try {
-			assertTrue("Remove writable permission.", exportFile.setWritable(false));
-			IProcessingInfo<?> processingInfo = exportConverter.convert(exportFile, massSpectra, false, new NullProgressMonitor());
-			try {
-				assertTrue(processingInfo.hasErrorMessages());
-			} catch(TypeCastException e) {
-				assertTrue("TypeCastException", true);
-			}
-		} finally {
-			exportFile.delete();
-		}
-	}
 }
diff --git a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLImportConverter_1_ITest.java b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLImportConverter_1_ITest.java
index e4db53ae41..d7141264cf 100644
--- a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLImportConverter_1_ITest.java
+++ b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msl/MSLImportConverter_1_ITest.java
@@ -59,16 +59,4 @@ public void testExceptions_3() {
 		IProcessingInfo<?> processingInfo = importConverter.convert(importFile, new NullProgressMonitor());
 		assertTrue(processingInfo.hasErrorMessages());
 	}
-
-	public void testExceptions_4() {
-
-		importFile = new File(TestPathHelper.getAbsolutePath(TestPathHelper.TESTFILE_IMPORT_NOT_READABLE));
-		assertTrue("Remove writable permission.", importFile.setReadable(false));
-		try {
-			IProcessingInfo<?> processingInfo = importConverter.convert(importFile, new NullProgressMonitor());
-			assertTrue(processingInfo.hasErrorMessages());
-		} finally {
-			assertTrue("Add readable permission.", importFile.setReadable(true));
-		}
-	}
 }
diff --git a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msp/MSPExportConverter_1_ITest.java b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msp/MSPExportConverter_1_ITest.java
index 925665164e..a9f7a2f4d0 100644
--- a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msp/MSPExportConverter_1_ITest.java
+++ b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.amdis.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/amdis/converter/msp/MSPExportConverter_1_ITest.java
@@ -92,20 +92,4 @@ public void testExport_3() {
 			assertTrue("TypeCastException", true);
 		}
 	}
-
-	@Test
-	public void testExport_4() {
-
-		try {
-			assertTrue("Remove writable permission.", exportFile.setWritable(false));
-			IProcessingInfo<File> processingInfo = exportConverter.convert(exportFile, massSpectra, false, new NullProgressMonitor());
-			try {
-				assertTrue(processingInfo.hasErrorMessages());
-			} catch(TypeCastException e) {
-				assertTrue("TypeCastException", true);
-			}
-		} finally {
-			assertTrue("Add readable permission.", exportFile.setReadable(true));
-		}
-	}
 }
diff --git a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.matlab.parafac.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/matlab/parafac/converter/MatlabParafacPeakImportConverter_4_ITest.java b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.matlab.parafac.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/matlab/parafac/converter/MatlabParafacPeakImportConverter_4_ITest.java
index d9118dbf87..9f28e3e01d 100644
--- a/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.matlab.parafac.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/matlab/parafac/converter/MatlabParafacPeakImportConverter_4_ITest.java
+++ b/chemclipse/tests/org.eclipse.chemclipse.msd.converter.supplier.matlab.parafac.fragment.test/src/org/eclipse/chemclipse/msd/converter/supplier/matlab/parafac/converter/MatlabParafacPeakImportConverter_4_ITest.java
@@ -13,10 +13,7 @@
 
 import java.io.File;
 
-import org.eclipse.chemclipse.model.core.IPeaks;
 import org.eclipse.chemclipse.msd.converter.supplier.matlab.parafac.TestPathHelper;
-import org.eclipse.chemclipse.msd.model.core.IPeakMSD;
-import org.eclipse.chemclipse.processing.core.IProcessingInfo;
 import org.eclipse.core.runtime.NullProgressMonitor;
 
 import junit.framework.TestCase;
@@ -48,15 +45,6 @@ public void testImport_1() {
 		}
 	}
 
-	public void testImport_2() {
-
-		File file = new File(TestPathHelper.getAbsolutePath(TestPathHelper.TESTFILE_IMPORT_NOT_READABLE));
-		assertTrue("Remove readable permission.", file.setReadable(false));
-		IProcessingInfo<IPeaks<IPeakMSD>> processingInfo = converter.convert(file, new NullProgressMonitor());
-		assertNull(processingInfo.getProcessingResult());
-		assertTrue("Add readable permission.", file.setReadable(true));
-	}
-
 	public void testImport_3() {
 
 		try {