Game crashes when trying to save preset without any marking

[lithriandel]

Used version: IMT 1.9 Stable

OS wersion: Window 10 (21H2 Build: 19044.09.16)

Problem description: I accidentally clicked the save preset button when tere were no markings done on the intersection. The game hard crashed.

Steps to reproduce the behavior:

1. Select an intersection with no markings done.
2. Click on save preset button.

Expected behavior: I would expect to either nothing happening, or have a message box shown, that explains why the preset can't be saved.

Screenshots:

Additional information: I used modded roads from the "Highways over Wall" pack.