Bug Summary

LMMS freezes at 100% on any exports that I try. I have tried to export three different projects, one which was new, and two older projects which I know had at one point successfully exported. Each one freezes at 100% and one closes entirely. Running LMMS from a terminal gives me the following error when the freeze/crash happens:
QMetaMethod::invoke: Unable to handle unregistered datatype 'MidiTime'

The project that crashes gives an additional segfault.

Steps to reproduce

• Create any project, the behavior does not seem to be affected at all by the contents of the project.

Expected behavior

Project should export successfully.

Actual behavior

LMMS freezes and sometimes segfaults at 100% exported, throwing the error
QMetaMethod::invoke: Unable to handle unregistered datatype 'MidiTime'

Affected LMMS versions

Version 1.2.2
Arch Linux
JACK Audio