Can't Run SPSS with Mountain Lion

I recently upgraded to Mountain Lion and then installed SPSS 21. I am unable to get SPSS to work and I receive the following error message when I start the program: Serialization scheme was not recognized inet:Local Computer:0.

I then get presented with a popup window asking me to specify my server login: local computer.

Might anyone have any suggestions to fix this problem. I have been unsuccessful checking the SPSS support documents and just looking around the web, and my campus IT support hasn't had anything to offer.

Some further notes:

SPSS 20 did not work after I upgraded to Mountain Lion, but SPSS states that version 20 is not fully compatible with Mountain Lion and users should upgrade to version 21.

Another discussion thread regarding difficulties with starting SPSS suggested creating a new user with Administrator priviliges and running SPSS under that user. This solution has not worked for me. Likewise, another suggestion of starting SPSS from terminal mode has not solved my difficulties.