Is this the only occasion this crash has happened?

It might just be a one-off and might not happen again. But will be looked over to see if there's a code problem that needs to be fixed. Thanks for posting the bug report.

In the meantime, you might want to put the 184.170.169.112 address into your banned filtered hosts. ie: Tools > Options > Advanced > Filtering & add (copy-paste or type) that address into the Add box & press Add Address. The host in question is a spambot.

One other thing, make sure your WireShare is added as an exception in your Windows firewall.