Fix a problem if the memory cards couldn't be found. This fixes the plug-ins in the preferences window not popping up.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@86611 e17a0e51-4ae3-4d35-97c3-1a29b211df97
Some preferences improvements to the PeopsSoftGL plug-in on OS X.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@86612 e17a0e51-4ae3-4d35-97c3-1a29b211df97