The user instructions say to run beaver as an executable jar file, but there is no beaver.jar in the download zip. There is a beaver-rt.jar and it does not appear to be executable. Yes, I could open it and guess at the main class but I thought it would be good to point this out, and I prefer not to guess and possibly waste time. Thanks.
I have the same problem (using a mac) but I really don't want to execute this app...