I've got a problem that I've had occur several times at different places while doing the same thing.

Im working in a 3D sketch, where I've used the convert entities command to bring geometry from a 2D sketch into the 3D sketch, and when trying to attach a line segment to the converted lines, it causes SW to fail immediately, and then crash to the desktop.

Has anyone seen this, or know of a fix, or is it just an inherent instability in the program?

Like I said, I've had this happen several times. I've also had it happen when converting a projected curve into a 3D sketch and then crashing when attaching a line segment to it.

I'm using SW2013 SP2.0