"The file that you selected could not be found. Check the spelling of the file name and verify that the location is correct."
When trying to open the sample dashboard in MOSS 2007 Enterprise Report Center site as an user with Read Only rights, we got this error message.
While troubleshooting, we compared two document libraries and reproduced the scenario.
After the excat replication of error message on a new document library,we found out the resolution which is quite simple.
Resolution:-
1. Go to your reports library where the workbooks are stored.
2. On the Settings menu, click Document Library Settings.
3. Under General Settings, click versioning settings.
4. Disable versioning.
I hope the above steps helps you to resolve your issue.
Thanks...