>>I don't know if replacing the VFP300 file will solve your problem. But from the error message you have, this file may be damaged. Another problem may be: you're developing in VFP3.0b and try to use the program with VFP300 from VFP3.0.
>>
>
>Using two different versions might be the cause of this problem, I agree.
>We use both 3.0 English version, and 3.0b chinese version for development.
>So, if I assemble all parts of the program in 3.0b chinese environment, re-compile it,
>make an installation program, and install them on the clients would solve the problem.
>I don't know whether I am right, but I have to try!
>
>Many thanks!

Also, be careful to have only one VFP300 file on each computer. Having more than one is also confusing (ie one in windows\system directory and one in the app directory, etc).

Vlad