I appreciate your patience through this. It's turning out not to be as simple as I thought. I think I'm also making some assumptions about your package. If you don't mind, can you answer these questions for me?
1. Did you repackage this application or is this a vendor .msi?
2. If vendor, what is the product name?
3. If vendor, did you extract the .msi out of an executable?
4. I assume you tried this initially, but want to be sure:
msiexec /i
/qbn /L*v c:\msilog.txt INSTALLDIR=C:\xyz
If not, would you mind giving it a whirl?
5. If you have Orca or a log file handy, are these files being installed through a merge module? Do the files exist within Orca (use the File table)?
6. Pick one of the files that are not installing like you expect, using Orca look in the File table for the Filename (be sure to use the Filename column) note the component name. Look in the Component table for the component name--what's the value under the Directory column?
Thanks!