I am using web server pro and getting this error on installation to the default path
however, if i change the installation path the program runs perfectly
Attached is the Screen Shot for the same.
Below are the values i pass in argument of custom action's install section
"[ProgramFilesFolder]\UltiDev\Web Server\UWS.RegApp.exe" /r /AppID="{AB7975FB-6563-41A9-96F8-4B09E354C7CF}" /path:"[TARGETDIR]\" /defaultdoc:"Default.aspx"
narender.rautela attached the following image(s):