diff --git a/src/main/java/pro/litvinovg/w2phtml/gui/Document.java b/src/main/java/pro/litvinovg/w2phtml/gui/Document.java
index 484b301..c65036a 100644
--- a/src/main/java/pro/litvinovg/w2phtml/gui/Document.java
+++ b/src/main/java/pro/litvinovg/w2phtml/gui/Document.java
@@ -83,31 +83,34 @@ public class Document {
 				}
 				XStorable storable  = UnoRuntime.queryInterface(XStorable.class, textDoc);
 				
-				if (storable == null || storable.isReadonly()) {
-					Debug.printLog("Document is read only", componentContext);
-				} else {
-					//Debug.printLog("Document is in rw mode", componentContext);
-				}
+				/*
+				 * if (storable == null || storable.isReadonly()) {
+				 * Debug.printLog("Document is read only", componentContext); } else {
+				 * Debug.printLog("Document is in rw mode", componentContext); }
+				 */
+				
 				XModifiable modifieable  = UnoRuntime.queryInterface(XModifiable.class, textDoc);
 
 				if (modifieable == null || modifieable.isModified()) {
-					Debug.printLog("Document is modified", componentContext);
+					Debug.printLog("Document is modified. Save changes before conversion.", componentContext);
 				} else {
 					//Debug.printLog("Document isn't modified", componentContext);
 				}
-					
-				String url = model.getURL();
-				URI uri = new URI(url);
-				File file = new File(uri);
-				if (file.exists() && file.canRead()) {
-					//Debug.printLog("File exists!", componentContext);
-					fileName = file.getAbsolutePath();
+				if (!storable.hasLocation()) {
+					Debug.printLog("Document is not saved. Save document before conversion.", componentContext);
+					return;
 				}
+					String url = model.getURL();
+					URI uri = new URI(url);
+					File file = new File(uri);
+					if (file.exists() && file.canRead()) {
+						fileName = file.getAbsolutePath();
+					} 
 
-			} catch (Exception e) {
+			} catch (Throwable e) {
 				System.out.println("xDesktop inaccessible. Can not proceed.");
-				e.printStackTrace();
-				System.exit(1);
+				Debug.printLog(e.getStackTrace().toString(), componentContext);
+				return;
 			}	
 		}