Comment 1 for bug 538894

possibly duplicate of
Bug #284546 “SVN, rev.19997: Crash on using calligraphy tracing tool with wacom tablet”
<https://bugs.launchpad.net/inkscape/+bug/284546>
related:
Bug #324673 “Calligraphy tool crashes app when guide path used”
<https://bugs.launchpad.net/inkscape/+bug/324673>

Could you provide more information about the crash?
Console messages:
1) open 'Applications > Utilities > Console', select 'All Messages' from the log list, clear the display
2) Restart Inkscape and reproduce the crash
3) Copy all console messages that are now displayed in the 'Console' window, paste them into a new TextEdit document (in 'Plain Text' format) and save it

Crash report:
4) in 'Console' display the log list again and go to
   'Logfiles > ~/Library/Logs > DiagnosticReports'
5) look for the related (latest) crash report for 'inkscape-bin', ctrl-click it and use 'Reveal in Finder' to locate it.

Attach both the saved console messages and the crash report to your next comment here.