what has happened to audacity installation on my Mac os x installtion??? here is screenshot
We can’t say because you have given us no information to go on - when is it crashing ? What version of OS X?
Is it crashing on launch? If so it could be due to plug-ins on your system - see here for what you can do:
http://wiki.audacityteam.org/wiki/User:BillWharrie/Resetting_Preferences_on_Mac .
If that does not help please attach the crash report that you see when you crash. See here for how to attach files https://forum.audacityteam.org/t/how-to-attach-files-to-forum-posts/24026/1 .
Gale