Hi, I´m trying to trace a bitmap (attached) with Trace Bitmap-Single Scan: Centerline tracing (autotrace) 

but short after sarting I get an error: "Incscape got an internal error and will now closed". With a part of the picture it runs. I guess it hast to do with overlapping of the path results. Does anyone have an ideas what I can do. It´s no option to split up the picture. I already changed the parameters. The trace method I select because I absolutely need path lines after tracing, not areas.

Pretty sure it has something to do with your System. Works here as expected straight out of the box like per the other thread: