Close Timeslips. CLose any other program that runs BDE (word perfect is one). Clear temp files. Go to control panel > BDE Administrator > Configuration > System > Init Change Maxfilehandles to 256.
You can also try Diagnose this computer in station administrator.

The maxfilehandles were already set for 256. I increased them to 512. No change in the error message. It's hopeless trying to work with this DOS-vintage database ... when it screws up, you're toast. You'd think they'd at least move up to dBase III.

You might want to uninstall and reinstall BDE. There are instructions available in the Sage Knowledgebase and in previous threads in this forum. Timeslips v2017 is no longer based on Paradox/BDE, it is based on Firebird SQL. If you are interested in upgrading you can reach out to me or one of the other consultants on this forum and we can provide you with pricing options.

I'm quite sure that this is an unrecoverable error, Sage knows it, and directs you to a non-solution just to make it look like it CAN be fixed. Station Administrator has no way of increasing the file handles, and diagnose just gives you a permanently spinning wheel. I'll uninstall and reinstall BDE to prove that there's no solution, but I can't find the article you specified with the site's limited searching capabilities. Could you point me to it?

I'm quite sure that this is an unrecoverable error, Sage knows it, and directs you to a non-solution just to make it look like it CAN be fixed. Station Administrator has no way of increasing the file handles, and diagnose just gives you a permanently spinning wheel. I'll uninstall and reinstall BDE to prove that there's no solution, but I can't find the article you specified with the site's limited searching capabilities. Could you point me to it?

Don't have time right now to search. If you message me privately, or email me, I can send them to you.