I have found the problem, but it is not a problem I've been able to puzzle out.
I have two methods of opening a file, one is your way, with the full path. Then there is my way which gets the current path, removes the name of the file being executed from the path, then appends the rest.
In development mode, where they both work, I get:
C:\WINNT\Temp\app\data\dobbs-rpcm-1553.vit
C:\WINNT\Temp\app\data\dobbs-rpcm-1553.vit
for the path names. I suspect that the name stripping function does something funny at run time. I'll look around on the developer zone posts and see if I can figure out how to get it working. But I've pretty much got things working.
-Dobbs