move %USERPROFILE%|.lmmsrc.xml %USERPROFILE%|.lmmsrc.xml.bak
qjackctland click on "play" or its equivalent. LMMS should automatically should start JACK-transport on startup, but this fails on some systems.
chmod +x <script name>and then make a symlink in a desired location.
bt fullwill show a backtrace you can report.
-gflag and not stripping the symbols afterwards.
-fomit-frame-pointerin a FLAG-parameter to configure. This is known to lead to an unusable LVSL (LMMS VST Support Layer).