In some rare occurrences users may experience an End User Agent crash when running SCR on a touch capable system. After looking into the nature of the issue and reviewing crash logs we have determined the root of the issue lies within Microsoft .NET Framework 4.7 and is a known bug.
Luckily, Microsoft has provided a fix for the issue. The resolution is detailed on Microsoft's support page here: https://support.microsoft.com/en-us/help/4033488/comexception-error-from-wpf-applications-after-the-net-framework-4-7-i.
In the case you continue to experience issues with SCR functionality related to this issue please visit www.pc-doctor.com/support and choose to open a new support ticket. We ask that you provide in detail as much information to the situation as possible.