No response from the admin yet. However, they did post the requirements here:
http://moowrap.net/forum_thread.php?id=16
For ATI:
BOINC Client v6.10.17 (Check! I have 6.10.58)
Driver v10.4 or later (Check! I have 10.11)
Minimum device memory 250M (Check! I have 1gb)
ATI Runtime (not older AMD) (I have ??)
Where does one download Runtime? Is it not part of the Catalyst Software Suite? How do I tell what version I have?