It is a widespread issue, I have the crash as well. Probably a server issue or internet related issue whereby the current Vegas implementation request respond handling (or lack of it) as a receiver is responding incorrect by crashing instead of being robust and give the correct result (or give a proper reason for a failure to obtain a proper result). Anyway it should never crash.
This is based on the following: when in Vegas, disconnect the internet, then ask for help/check driver -> In this case Vegas does not crash - pointing to something Vegas gets from the internet back it cannot handle properly...
I get nothing when checking for my AMD GPU. I do know that there is one more current than what I am using. I'm getting "Not found" for both Download and Change List.