I just installed Vegas 12 Pro at work. Our users use Standard Accounts in Windows (as opposed to admin accounts) and Vegas won't start using a Standard account, it says there is a low memory error (even though I have 8 gigs) it runs fine using an Admin account or if I choose Run as administrator.
Would very much like to hear what you mean by "fixed'" in V12Pro (394) ???
It is common for such a broad integrated application to require the admin account of the client machine -not the corporate network! You can also run into much difficulty if you try to install third-party (plugins) to also require their host app to run in local admin.
Just to clarify, what was not working was running Vegas without admin privileges, I obviously installed it from the admin account. With the latest build it will run fine for both admin and normal accounts.