UPDATE: After 2 months there have been no reported problems with the programs on Mavericks, 10.9 OSX
Updating to Mavericks (10.9) on Apple computers may have compatibility problems with both CPlotProv3 and MTProv3. Please do not update to the latest version (10.9). Further details are not yet available. The program compatible versions of the programs are 10.6.8 to 10.8. There will be an upgrade to the programs in the future.