Apple has released Mac OS X Lion (10.7). POSIM Diamond will NOT run on Mac OS X Lion because Apple is dropping support for PowerPC code through Rosetta. Do not upgrade your computers if you are using POSIM Diamond still.
Since POSIM Diamond is being replaced by POSIM EVO we are NOT going to make POSIM Diamond compatible with Mac OS X Lion. The ultimate resolution will be for you to convert to POSIM EVO. The conversion process has already been opened up and you can request to convert at anytime (depends on availability of our Sales Reps and Tech Support). Until you are able to upgrade to EVO you will need to stay on your current version of the Mac OS (Up to 10.6 – Mac OS X Snow Leopard) to run POSIM Diamond.
POSIM EVO has been tested and will work great on 10.7 (Mac OS X Lion). POSIM EVO was specifically programmed with the concept of the consistently changing Mac OS in mind, to ensure in the future we don't need massive programming changes with each new version.