Fixed:

• Convolutor / Guitar Amp: very short IR files didn't work right.
• Mac: got rid of "is from an unidentified developer" message recent macOS versions showed on launching MultitrackStudio for the first time.
• Some VST plugins would cause an access violation while processing audio.
• Some VST plugins would crash immediately on loading the plugin.
• Resizing VST plugin window didn't work properly if plugin UI had very small height initially.
• Monitoring the 'Internal' sidechain input on a VST plugin could result in silence. Also applies to AU plugins on Mac.
• Mac: user interface of some VST plugins was not visible (window very small).
• Mac: sidechaining an output from a multiple-output AU instrument to an audio track would crash. (Pro edition)
• Mac: some multiple-output AUi plugins didn't have output mixer.
• Mac: some AU plugins turned stereo signal into mono.
• Mac: unloading certain AU plugins no longer leads to MTS crashing and terminating.