Only versions 8,9 and 10 of both the ViaCAD and Shark products  are compatible with Windows 8 and 8.1. and Yosemite.  Version 7 and below can still be run on Windows 7, vista and XP and OSX 10.6 to 10.9 for the MAC. 



Please keep in mind that any we can not guarantee compatibility with operating systems that have not been introduced at the time our programs are released.