Cabinet Files in Windows Installer

I am creating a .msi file by embedding a .cab file in my windows installer
..msi file.

Some of the files in the .cab include a path, some do not. When I run my
msi file, The files without a path install perfectly. However, I cannot get
windows installer to "read" the files in the .cab that include a path.

Does windows installer have some prohibition for reading files in a .cab
when a file in the cab includes a path? OR are there some special flags to
set in the .msi when using files in a .cab that include a path?