MinimServer 2 disappearing sometimes

[simoncn]

It looks like this crash dump is caused by the web browser closing its conection to MinimServer while MinimServer was sending a response. Perhaps closing the browser tab could cause this.

This is not related to your other problem of MinimServer disappearing from the network, which is caused by multicast discovery issues with your network (probably your router or switch). Some UPnP servers try to compensate for this by "flooding" the network with discovery messages. The ohNet stack used by MinimServer for UPnP communication does not do this, so it is more sensitive to these network problems. See this page for some suggestions for how to fix this issue.