Like Bob, I had a similar problem on Windows 2003 (UV 10.2.10) and found
it was permissions on the temp folder that was causing the problem.
Check ENV at TCL to see if the temp folder for UV is different from the
temp folder you use when logged into windows. By default Windows is
C:\temp and UV is
Don,
The "DOS" command is pretty badly broken, particularly if you need to
try to use a quoted string with embedded spaces (e.g. '... "C:\Program
Files\MyApp\AppName.exe" ...').
After I bitched about it, a new GCI function "UVRunCommand" was
introduced (in 10.0 IIRC).
You need code like this