Bug fixed in Variables plugin

src/main/java/fr/ill/ics/client/control/plugin/setup/VariablesControllerSetupPlugin.java

@@ -104,9 +104,12 @@ public class VariablesControllerSetupPlugin extends ClientControllerSetupPlugin
 			return new VariableModificationResult(DISABLED_VARIABLE_WARNING, e.getMessage());
 		} catch (VariableExistsException e) {
 			return new VariableModificationResult(ALREADY_EXIST_EXCEPTION, e.getMessage()); // should not happen because caught before
-		} catch (Throwable e) {
-			// Should not happen.
-			e.printStackTrace();
+		} catch (NoSuchVariableException e) {
+			return new VariableModificationResult(NO_SUCH_VARIABLE_EXCEPTION, e.getMessage());
+		} catch (InvalidExpressionException e) {
+			return new VariableModificationResult(INVALID_EXPRESSION_EXCEPTION, e.getMessage());
+		} catch (UnremovableVariableException e) {
+			return new VariableModificationResult(UNREMOVABLE_VARIABLE_EXCEPTION, e.getMessage());
 		}
 		return new VariableModificationResult(VARIABLE_CREATION_OK, "");
 	}