Turns out that one of iRoster’s embedded frameworks was left linking to libSaturn (part of CHUD). Anyone without CHUD installed (i.e. most non-developers) will not have been able to launch iRoster. I’ve fixed it and posted a new version. There are no differences between 1.0b11 and 1.0b10 beyond this one fix.
That’ll teach me for testing iRoster on boxes I also do development on.