Hi Yuanitta,

Sys(2333) function does not help.
I have traced the call stack of debugger. The error happened in app_application.tmrrefresh.timer procedure, which is belongs to VFP framework.
Therefore, I produce a simple program and compiled it to exe program without the "FRAMEWORK". It works.

I don't know what trigger the error in the framework procedure.

Thanks to you and all the people who respond my message.

Matthew
tokaho@hkstar.com