Help!

I had my project database open all afternoon. Then I closed for an hour, came back, and now it will not open anymore.

A strange message shows at the bottom of the screen (see attachment).

 

Trying to repair won't work because the only option under Database Tools> is "compact" and using that does not change anything. But other databases open fine - just not the one i need reight now.

 

This is really awful, I need this data to finish a presentation document tomorrow morning.

 

Is there some other way to access the Repair function for a database file that won't open?

 

Thanks