Sometimes XnViewMP doesn't seem to be able to detect if there's an instance already open, hanging the programs with multiple "xnview.exe" processes stuck in the task manager. The only way to resolve this is to kill all tasks manually.
This *seems* to occur esp. when the computer is busy, and my laptop is rather slow to begin with ... so maybe there's some timeout that could be tweaked before xnview decides there's no instance running and decides to open another one?
Using "Version 0.72 x64 (Dec 19 2014)" on Windows 7.
"One instance of program only" hangs XnViewMP
Moderators: helmut, XnTriq, xnview, Dreamer