We recently got this error when installing Maya 2015:
Source file not found: 93437458-FD45-41D9-8F2E-8B4F60CF9356.dll. Verify that the file exists and that you can access it.
Please check out this AKN article for the solution:
This is a best practices blog post that we use when installing our products:
Thanks to Rick Falck for confirming this solution worked.