diff --git a/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/natures/SARLProjectConfigurator.java b/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/natures/SARLProjectConfigurator.java
index 0de55a493e..8e7ed4bb7b 100644
--- a/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/natures/SARLProjectConfigurator.java
+++ b/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/natures/SARLProjectConfigurator.java
@@ -279,9 +279,12 @@ public static void configureSARLProject(IProject project, boolean addNatures,
 					outputFolder, testOutputFolder);
 
 			// SARL specific configuration
+			final IFolder testGenerationFolderFolder = testGenerationFolder.get();
+			final IPath testGenerationFolderPath = testGenerationFolderFolder == null ? null
+					: testGenerationFolderFolder.getProjectRelativePath();
 			SARLPreferences.setSpecificSARLConfigurationFor(project,
 					generationFolder.get().getProjectRelativePath(),
-					testGenerationFolder.get().getProjectRelativePath());
+					testGenerationFolderPath);
 			subMonitor.worked(1);
 
 			// Create the Java project
@@ -338,27 +341,50 @@ private static void ensureSourceFolders(IProject project, boolean createFolders,
 		final IFolder testOutputFolder = ensureOutputFolder(project,
 				SARLConfig.FOLDER_TEST_BIN, true, createFolders, monitor.newChild(1));
 		if (sourcePaths != null) {
-			sourcePaths.set(new IFolder[] {sourceSarlFolder, sourceJavaFolder, resourcesFolder});
+			assert sourceSarlFolder != null : "sourceSarlFolder must not be null";
+			if (sourceJavaFolder != null) {
+				if (resourcesFolder != null) {
+					sourcePaths.set(new IFolder[] {sourceSarlFolder, sourceJavaFolder, resourcesFolder});
+				} else {
+					sourcePaths.set(new IFolder[] {sourceSarlFolder, sourceJavaFolder});
+				}
+			} else if (resourcesFolder != null) {
+				sourcePaths.set(new IFolder[] {sourceSarlFolder, resourcesFolder});
+			} else {
+				sourcePaths.set(new IFolder[] {sourceSarlFolder});
+			}
 		}
 		if (testSourcePaths != null) {
-			testSourcePaths.set(new IFolder[] {testSourceSarlFolder});
+			if (testSourceSarlFolder != null) {
+				testSourcePaths.set(new IFolder[] {testSourceSarlFolder});
+			} else {
+				testSourcePaths.set(new IFolder[] {});
+			}
 		}
 		if (generationPaths != null) {
+			assert generationFolder != null : "generationFolder must not be null";
 			generationPaths.set(new IFolder[] {generationFolder});
 		}
 		if (testGenerationPaths != null) {
-			testGenerationPaths.set(new IFolder[] {testGenerationFolder});
+			if (testGenerationFolder != null) {
+				testGenerationPaths.set(new IFolder[] {testGenerationFolder});
+			} else {
+				testGenerationPaths.set(new IFolder[] {});
+			}
 		}
 		if (standardGenerationFolder != null) {
+			assert generationFolder != null : "generationFolder must not be null";
 			standardGenerationFolder.set(generationFolder);
 		}
-		if (testingGenerationFolder != null) {
+		if (testingGenerationFolder != null && testGenerationFolder != null) {
 			testingGenerationFolder.set(testGenerationFolder);
 		}
 		if (classOutput != null) {
+			assert outputFolder != null : "outputFolder must not be null";
 			classOutput.set(outputFolder);
 		}
 		if (testClassOutput != null) {
+			assert testOutputFolder != null : "testOutputFolder must not be null";
 			testClassOutput.set(testOutputFolder);
 		}
 	}
diff --git a/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/wizards/newproject/NewSarlProjectWizard.java b/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/wizards/newproject/NewSarlProjectWizard.java
index 7e4a5f59fc..6e67c38b37 100644
--- a/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/wizards/newproject/NewSarlProjectWizard.java
+++ b/main/coreplugins/io.sarl.eclipse/src/io/sarl/eclipse/wizards/newproject/NewSarlProjectWizard.java
@@ -290,37 +290,40 @@ public void run() {
 	 * @param compilerCompliance the Java version that is supported by the project.
 	 */
 	protected void createDefaultMavenPom(IJavaProject project, String compilerCompliance) {
-		// Get the template resource.
-		final URL templateUrl = getPomTemplateLocation();
-		if (templateUrl != null) {
-			final String compliance = Strings.isNullOrEmpty(compilerCompliance)
-					? SARLVersion.MINIMAL_JDK_VERSION_IN_SARL_PROJECT_CLASSPATH : compilerCompliance;
-			final String groupId = getDefaultMavenGroupId();
-			// Read the template and do string replacement.
-			final StringBuilder content = new StringBuilder();
-			try (BufferedReader reader = new BufferedReader(new InputStreamReader(templateUrl.openStream()))) {
-				String line = reader.readLine();
-				while (line != null) {
-					line = line.replaceAll(Pattern.quote("@GROUP_ID@"), groupId); //$NON-NLS-1$
-					line = line.replaceAll(Pattern.quote("@PROJECT_NAME@"), project.getElementName()); //$NON-NLS-1$
-					line = line.replaceAll(Pattern.quote("@PROJECT_VERSION@"), DEFAULT_MAVEN_PROJECT_VERSION); //$NON-NLS-1$
-					line = line.replaceAll(Pattern.quote("@SARL_VERSION@"), SARLVersion.SARL_RELEASE_VERSION_MAVEN); //$NON-NLS-1$
-					line = line.replaceAll(Pattern.quote("@JAVA_VERSION@"), compliance); //$NON-NLS-1$
-					line = line.replaceAll(Pattern.quote("@FILE_ENCODING@"), Charset.defaultCharset().displayName()); //$NON-NLS-1$
-					content.append(line).append("\n"); //$NON-NLS-1$
-					line = reader.readLine();
+		final IFile pomFile = project.getProject().getFile("pom.xml"); //$NON-NLS-1$
+		// Do not create the pom if already present.
+		if (!pomFile.exists()) {
+			// Get the template resource.
+			final URL templateUrl = getPomTemplateLocation();
+			if (templateUrl != null) {
+				final String compliance = Strings.isNullOrEmpty(compilerCompliance)
+						? SARLVersion.MINIMAL_JDK_VERSION_IN_SARL_PROJECT_CLASSPATH : compilerCompliance;
+				final String groupId = getDefaultMavenGroupId();
+				// Read the template and do string replacement.
+				final StringBuilder content = new StringBuilder();
+				try (BufferedReader reader = new BufferedReader(new InputStreamReader(templateUrl.openStream()))) {
+					String line = reader.readLine();
+					while (line != null) {
+						line = line.replaceAll(Pattern.quote("@GROUP_ID@"), groupId); //$NON-NLS-1$
+						line = line.replaceAll(Pattern.quote("@PROJECT_NAME@"), project.getElementName()); //$NON-NLS-1$
+						line = line.replaceAll(Pattern.quote("@PROJECT_VERSION@"), DEFAULT_MAVEN_PROJECT_VERSION); //$NON-NLS-1$
+						line = line.replaceAll(Pattern.quote("@SARL_VERSION@"), SARLVersion.SARL_RELEASE_VERSION_MAVEN); //$NON-NLS-1$
+						line = line.replaceAll(Pattern.quote("@JAVA_VERSION@"), compliance); //$NON-NLS-1$
+						line = line.replaceAll(Pattern.quote("@FILE_ENCODING@"), Charset.defaultCharset().displayName()); //$NON-NLS-1$
+						content.append(line).append("\n"); //$NON-NLS-1$
+						line = reader.readLine();
+					}
+				} catch (IOException exception) {
+					throw new RuntimeIOException(exception);
+				}
+				// Write the pom
+				try (StringInputStream is = new StringInputStream(content.toString())) {
+					pomFile.create(is, true, new NullProgressMonitor());
+				} catch (CoreException exception) {
+					throw new RuntimeException(exception);
+				} catch (IOException exception) {
+					throw new RuntimeIOException(exception);
 				}
-			} catch (IOException exception) {
-				throw new RuntimeIOException(exception);
-			}
-			// Write the pom
-			final IFile pomFile = project.getProject().getFile("pom.xml"); //$NON-NLS-1$
-			try (StringInputStream is = new StringInputStream(content.toString())) {
-				pomFile.create(is, true, new NullProgressMonitor());
-			} catch (CoreException exception) {
-				throw new RuntimeException(exception);
-			} catch (IOException exception) {
-				throw new RuntimeIOException(exception);
 			}
 		}
 	}