Comment 3 for bug 1318657

The problem can be replicated by

1. Start inkscape
2. Open the test file.
3. new
4. select contents from first window, paste into second window.

The trigger for this problem is that the initial SVG has two exactly identical gradients named linearGradient4100 and linearGradient4100-8. Rename all references to 4100-8 to 4100, remove the unneeded 4100-8 in defs, and the file will work correctly when cut and paste. (Attached.) In the original test file, it doesn't matter what order the two gradients are copied over, 4100 first or last, the program will crash. Looking into it further now.