--- ICEpdf-pro-4.1.0-src.orig/icepdf/viewer/src/org/icepdf/ri/common/SwingController.java	2010-07-27 10:09:30.000000000 +0200
+++ ICEpdf-pro-4.1.0-src/icepdf/viewer/src/org/icepdf/ri/common/SwingController.java	2010-08-17 15:08:02.998253300 +0200
@@ -2243,8 +2243,13 @@
         if (fileName != null) {
             // Return the file with "-new" in the filename, before the extension
             // For example Test.pdf would become Test-new.pdf
-            return fileName.substring(0, fileName.toLowerCase().indexOf(FileExtensionUtils.pdf)-1) +
-                   "-new." + FileExtensionUtils.pdf;
+            int endIndex = fileName.toLowerCase().indexOf(FileExtensionUtils.pdf)-1;
+            String result;
+            if (endIndex < 0)
+              result = fileName + "-new." + FileExtensionUtils.pdf;
+            else result = fileName.substring(0, endIndex) + "-new." + FileExtensionUtils.pdf; 
+              
+            return result;
         }
 
         return fileName;