The data file you have selected is an MYOB data file...

Situation: The data file you attempted to open is a Version 7.5 or earlier data file, and it can’t be used by MYOB Accounting Plus Version 10 in its present form.

Solution: Be sure the data file you attempted to open is the data file you want. If you’re sure the file is correct, you’ll need to upgrade the data file using the MYOB Accounting Plus Upgrade Wizard.

The data file you have selected is an MYOB data file...