>I get an error during a rebuild of a project. Didn't write it down exactly, but it always comes up with "record no. 3" being the problem.
>
>What happens is that VFP freezes, and I have to kill the thread thru Task Manager. I check the files in my project, and the DCX files got smashed.
>
>I was lucky in that I did a fresh install of VFP before applying SP4. After this problem, I just deleted it, and used my previous SP3 version instead. My project is safe and intact.

I am using VFP6 SP4 on NT4 with not problems. Can you post the actual error message.