First line may already be too late, at least to avoid problems. Instead you need RESOURCE=OFF in your config.fpw file, which should be included in the exe. However, in your case it sounds like you have SET Resource On somewhere in your code.

>Hey all
>
>Got this application running on about 160 machines and all of a sudden we're getting "Resource file corrupted - overlay with new?" error in the middle of running. First command in my main program is "Set Resource OFF"
>
>Now, I can almost understand getting it when the app first fires off, but not during the running.
>
>What's going on?