Old 04-09-2020, 11:01 AM   #1
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Join Date: Jan 2018
Posts: 4
Default Reaper crashes with mac OS Catalina 10.15.4

My iMac automatically updated my OS to Catalina 10.15.4 two weeks ago and since that time I have not been able to get Reaper to run...any attempts result in Reaper crashing and a notice saying Reaper quit unexpectedly. I have tried reinstalling both the Catalina version of Reaper and the 64 bit Reaper but always get the same result. I have a cue of work to do and a few projects to start and obviously cannot get to any of that while this is going on. Can anyone help me work through this? I'm beyond frustrated at this point and considering changing DAWs if there is no way forward. Thanks.
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Old 04-10-2020, 05:58 AM   #2
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Join Date: Jun 2011
Location: Belgium
Posts: 4,862

10.15.4 contains a bug, recognized by Apple. It doesn't hit everyone. It does affect a lot of audio drivers, but I haven't seen any reports from the video pros yet.

I'm afraid only Apple can fix this, since it has to do with the security subsystem.
“It has become appallingly obvious that our technology has exceeded our humanity” Albert Einstein
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Old 04-15-2020, 08:31 PM   #3
Patrice Brousseau
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Join Date: Apr 2013
Location: Montréal, Québec province in Canada
Posts: 112

There is recent Catalina supplemental update, worth a try maybe? No TimeMachine or CCC backups of two weeks ago?
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