MadCap Software Forums

I had the same issue, my hunch is might have to do with windows updates this October 2021. I'm using Windows 10 20H2. Whats your windows version? Thanks! The error log that shows up is related to B3.WPFKit.. and I think it has to do with this breaking change. https://docs.microsoft.com/en-us/dotnet/...

So Flare 2020 would not load and throws this error (I've already contacted support) at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) at System.RuntimeTyp...