1.3.1 - catalog - crash when 'Building catalog' aborted

[user0]

XnView: MP 1.3.1 64bits
OS: Windows 64bit (22H2), display resolution 3840x2160, win scaling 150%

Settings → Catalog
Crash when 'Building catalog' form aborted

To reproduce:
1. run clean portable XnViewMP
2. open Settings (F12)
3. goto Catalog → Catalog tab
4. press 'Import folder...' button and select directory with a lot of folders, e.g. root directory, c:\
'Building catalog' form will appear and start calculating process that take some time in case of root directory
5. press 'Abort' button in Building catalog form.
Program will crash

[xnview]

Thanks to your detailed description I can reproduce the problem.

[user0]

fixed in 1.4.0b1