Pointcloudtrace command crash

I tried the new (V26) pointcloudtrace command. It crashes every time i try vectorize a 2d polyline.
What i did:
1. Import E57 pointcloud
2. Create sectionplane of slice type
3. Activatesectionview
4. call pointcloudtrace command and choose TwoPoints option
5. software crashes when clicking somewhere on the pointcloud
Anybody else experiencing the same problem or having a different workflow that works?
thx

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