mtassis

I just did the latest updates to Lotus Notes and on my desktop it is working ok, however, on my laptop i cannot open one very important NSF file. Error message: 'Error reading NSF file'. I went to the Lotus Notes support site and followed directions, still no joy. I have uninstalled and reinstalled Lotis Notes. The same error. How to avoid this error messages and why it is happening??Please help me. Thanks in advance.