I've been having real issues with iTunes since upgrading to iTunes 12.2 and OS X El Capitan 10.11 Beta.
I can launch iTunes and it will then attempt to connect to iTunes Store. iTunes will then crash and ask to send a report. Afterwards, if I try to launch iTunes again it crashes immediately. I have updated iTunes to the 12.2.2 release and I am having the same issues as before.
The crash report says "iTunes quit unexpectedly while using the libgnsdk_dsp.3.06.1.dylib plug-in."
My library is stored an external SSD card permanently connected to my MacBook. Before upgrading to both iTunes 12.2 and OS X El Capitan 10.11 Beta I had no issues with iTunes.
I have tried reinstalling iTunes but this has not solved the problem. I can't try and restore from a back-up as the latest back up I have is to old.
Any suggestions??