As Peter suggested. Please send us the information on the crash, including the nature of the crash (any error messages), OS platform you are running on, software versions, graphics card model, and graphics card driver version.
Red will install and work in Vista 64 but runs as a 32 bit application.
It will not work with Vegas if you are running the 64 bit version.
If you have the 32 bit version of Vegas installed you should be able to run as a plug-in there. If not you could run Red as a standalone and export your clips to later import into Vegas.
Hope this helps.
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