The following problems should be fixed in the 1.2.1 Update:
Crashes running two or more instances with open GUI / audio (mostly Windows)
Crashes when unplugging (multiple) instances in different hosts
Crashes when adding instances in FL Studio 11 on Windows
Frozen GUI in ProTools on Windows (controls can't be adjusted)
Only Background of GUI window visible in different hosts on Windows
Mouse wheel events on Win propagated to the host or not received
Mouse clicks & key commands stolen by plugin in different hosts
Replika producing feedback without audio input in certain cases
Some issues still exist and need to be addressed in the future:
We still expect problems with certain graphics cards on Windows, most notably Intel's HD3000
Very first plugin scan can result in a crash in certain hosts
In rare cases, dragging instances between slots crashes Logic 9 on OSX 10.8.5
Problems in Studio One typing preset names in the Save dialogue
Additional remarks:
Maschine 2 users, please update to Maschine 2.2.3
Cubase 8 users, please update to Cubase 8.0.5