In foxpro, when open task pane manager, and do a search. Pick a directory, go to text search tab, type in text and click Find Now, sometimes it works fine. Sometimes it will pop up an error that says

"You need to have FILER.DLL in order to use this utility."

Then if I click Find Now again it will pop up and error that says...

An error occured with File:
Error Number: 1426
Method: find
Line Number: 62
OLE Error code 0x80070057:
The parameter is incorrect

If exit and come back in, will start with the first error then start giving the second one. After a while it will quit and start working fine again.
Any thoughts as to what causes this or how to fix it? Thanks.