The dump file showed that this is the crash which is listed under “Known issues in EZbass 1.1.5” in the release notes section:
Sending MIDI to the EZbass plug-in while its window is being opened for the first time in a session can cause a crash. This crash won’t happen if the project was saved with another tab than the Bass tab active and it also won’t happen if “Show played note information” is off in Settings.
