Can you please post the full exception, you can find it in the script console.
Below the full crash log. Maybe it was caused by the recent new firmware update of the MK3. Thanks!
Called init()
Running.
Firmware version: 371
java.lang.NullPointerException
java.lang.NullPointerException
at de.mossgrabers.controller.slmkiii.mode.track.AbstractTrackMode.onButton(AbstractTrackMode.java:148)
at de.mossgrabers.framework.command.trigger.mode.ButtonRowModeCommand.execute(ButtonRowModeCommand.java:51)
at de.mossgrabers.framework.controller.hardware.AbstractHwButton.handleButtonRelease(AbstractHwButton.java:74)
at com.bitwig.flt.control_surface.proxy.BitwigStudioHost.lambda$createAction$5(SourceFile:1277)
at com.bitwig.flt.control_surface.proxy.CustomAction.lambda$invokedByHardwareAction$0(SourceFile:41)
at BJg.WlB(SourceFile:94)
at BJg.jrk(SourceFile:90)
at Ico.ETV(SourceFile:128)
at usu.Zue(SourceFile:76)
at vej.rwQ(SourceFile:248)
at uDP.WlB(SourceFile:329)
at MiO.ETV(SourceFile:213)
at yw1.run(SourceFile:91)
at MiO.run(SourceFile:102)
Called init()
Running.
Firmware version: 371
java.lang.NullPointerException
java.lang.NullPointerException
at de.mossgrabers.controller.slmkiii.mode.track.AbstractTrackMode.onButton(AbstractTrackMode.java:148)
at de.mossgrabers.framework.command.trigger.mode.ButtonRowModeCommand.execute(ButtonRowModeCommand.java:51)
at de.mossgrabers.framework.controller.hardware.AbstractHwButton.handleButtonRelease(AbstractHwButton.java:74)
at com.bitwig.flt.control_surface.proxy.BitwigStudioHost.lambda$createAction$5(SourceFile:1277)
at com.bitwig.flt.control_surface.proxy.CustomAction.lambda$invokedByHardwareAction$0(SourceFile:41)
at BJg.WlB(SourceFile:94)
at BJg.jrk(SourceFile:90)
at Ico.ETV(SourceFile:128)
at usu.Zue(SourceFile:76)
at vej.rwQ(SourceFile:248)
at uDP.WlB(SourceFile:329)
at MiO.ETV(SourceFile:213)
at yw1.run(SourceFile:91)
at MiO.run(SourceFile:102)