I had the Beta2 Full install and Beta3 kept saying "A-10C" version 1.1.0.0 should be installed" ... I uninstalled everything. Started with the Beta1, Beta2 Patch, then Beta3 patch and it finally allowed it to be installed..
On another note:
I know this was asked earlier, but, I don't have access to the Beta Forum (nor do I know how to request access).. But, what happened to the Nevada Map? Wags mentioned that it is is excluded in the release notes... just curious as I loved that area....