Thanks for your reply. Much appreciated!

The customer called today, said he'd had some problem with a virus, had done something to fix it, and my application now worked. I didn't question him closely but will when the time seems right (it didn't seem right today, the customer was dealing with cleaning the virus off his network).

>Just a SWAG. Maybe you've mismatched VFP runtime files installed on that PC?
>
>>A customer gets a "'file' is not an object file" error when he tries to run my commercial vfox6 app on his windows 98 v4.10.1998 machines (he's tried on 2) but not on his NT machine.
>>
>>I ship several .exe files with my app, all of which bring up the same error on the machines in question.
>>
>>I've never seen this error before. The app has been installed on several hundred machines running all flavors of windows, including the same version of windows 98 (4.10.1998).
>>
>>I've checked the microsoft knowledge base, which contains one article describing a vfox5 problem which doesn't apply (the microsoft search engine didn't find the article...it was referred to in a universal thread msg). Universal thread contains several references to the error but none appear to match my situation.
>>
>>Any suggestions?