How do I know which version of RV I am running?

About RV under the RV Menu is a useful dialog for figuring out which version of RV you are running. In this dialog you will find the “Build identifier” which tells you when the build was made, for what platform, if it is a dev pre-release (beta), and so on. This dialog also has the Qt version which can be really important if you are trying to compile your own PyQt or other Qt integrated libraries.