wyUpdate unhandled exception

We have used wyBuild & wyUpdate for our recent online game. For the most part it's working beautifully so thanks a bunch for making such a decent and easy to use piece of software 🙂

However one of users has reported this issue during an update:http://oi58.tinypic.com/dddp2o.jpg

Any ideas what might be causing this and if there is anything we can do on our end to fix this?

It sounds like they were deleting fonts on their computer. Tell them not to do that. If they lost the original fonts, then they'll have to reinstall Windows.