Crash when selecting a copied partly-downloaded from torrent

[Chris Wood]

Steps to reproduce:
1. Download one file from the middle of a list of files with uTorrent
2. Now start downloading the file before that file
3. Copy that new unfinished file to another folder on your HD
4. Click somewhere in that folder

Result:
XYplorer crashes

Expected result:
Xyplorer doesn't crash. If you click on the file maybe it could display some kind of error.