Corrupt file issue

Hi,

I have created a file in Excel 2010 but saved it as a .xls, the file contains some marcos which allows users to enter information into a user form and print it at a later date.

Users with Excel 2003 can enter information into the form and then close the document perfectly. However, when they attempt to open the file at a later date (e.g. a day later) the file cannot open sometimes and they receive a 'Microsoft Excel Has Encountered A Problem... Attempting To Recover The File, etc.' message, other times the file opens but the message displays when a command button is clicked.

When I open the same file through Excel 2010 it opens fine and once I save it the user is able to open it without problem in 2003.

Any help would be appreciated.

Thanks!

Thanks codeslizer for the reply!

I suspected the same, because the form is been printed there was a lot of formating of cells, etc. I imported the macro into an Excel 2003 file and started the formatting for scratch again within 2003, hopefully this will have removed any advanced 2010 features.