1.7.1 - viewer - drag and drop - few issues

[user0]

XnViewMP 1.7.1 64bit
Windows11 (23H2), display resolution 3840x2160, win scaling 150%

Viewer - drag and drop
few issues

To reproduce:
0. clean unziped app version
1. open any image in Viewer

issue A
2. drag and drop .txt file
it will be opened, but tab name is <Empty>

issue B
2. drag and drop 2 unsupported files, eg .docx
<Empty> tab and 2 error messages (File can't be loaded) will appear
3. press OK on one error message
- wait for a few seconds
app will crash

[xnview]