The notes for the new beta say to uninstall the old beta but don’t give any detailed procedure. I trashed the old application and data folder before installing the new beta, but starting up the new beta client hangs. Is this a conflict with the old beta or a separate problem?
Subject: Look in the folder with the installer.
If you downloaded the TAR file, extracting it would have created a folder. In that folder is an uninstaller. Run that. Then double check the library folder off the root as well as the one under your profile and make sure the files related to notes there are deleted.
Then, rerun the installer.