orca - installing on mapped drives

[NNZZNNZZ]

I have a LockPermission table in my .msi file that sets the security on a folder that has been created during installation. It works fine, unless I try to create and install the folder on a mapped drive. When I do so, the folder gets created but then I get the following error message:

"Could not set file security for file XXX Error: 3. Verify that you have sufficient privileges to modify the security permissions for this file"

Although I did provide myself with full privileges to the folder.

It installs fine if I remove the LockPermission table. Also, I tried adding the system account with full control to the hard drive, and disabling simple file sharing. It still didn't work.

It is worth noting that the problem only occurs when ALLUSERS = 1. It installs fine with ALLUSERS = 0.

Any ideas?

Thanks