If you have a PowerPC based Mac, the last version of Adobe Flash that will run on your computer is version 10.1.102.64. This is because as of version 10.2 (released 08-Feb-11) Adobe will only support Intel Macs from this point forward. You can find the old version in Adobe’s Flash Archives. Specifically, version 10.1.102.64 is here. If you need to find which Flash version is installed on your computer, you can find that out here.