simply accounting 8.5a

Hi: I have reinstalled my 8.5 simply accounting. Once I have restored my backup and use my password i get this!

? Simply Accounting-Confirmation
The data has been used in a newer version of Simply Accounting. It is recommended that you update to the latest version of Simply Accounting data.
Do you wish to proceed to open data?

Yes or No

If I say yes it will open and all my files are there. If I say no then it takes me back to the startup window.

Can anyone PLEASE help me and tell me how to rid myself of this popup?

Thank you very much.