Regards.
Thered is a forum in Irfanview site but the problem I am facing in portable version is not resolved.
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I sumitted a problem of not opening the 2nd instance. The Admin told me to unclick Property / Start-stop Tab/ Open only 1 instance radiobuttn.
It worked but only 2 instances were opened maximum.
I installed normal version. It opened any number of instances.
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This is a know bug. The launcher just needs an update.
@John: rebuild the launcher with PAL 2.1.1 (2.1.2 if released soon).
Previously known as kAlug.