Join GitHub today
GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together.Sign up
Help ▪ Issues ▪ Error while opening the Editor window
For some users with
Windows 7 (SP1) machines, the app crashes while opening the Editor window (right after the recording, for example), with messages like these:
Provide value on 'System.Windows.Markup.StaticExtension' threw an exception.
Keeping it short, this issue is caused by a faulty .Net Framework 4.7.1 update.
And if looked deeper, this shows up:
No FontFamily element found in FontFamilyCollection that matches current OS or greater: Windows7SP1
It means that the problem is related to a missing font resource.
Microsoft released a fix for this bug, you can take a look here:
Basically, you'll have to uninstall the faulty update or you'll have to run a tool to fix the issue for you..