Run-time error '-2147417843 (8001010d)': An outgoing call cannot be made since the application is dispatching an input-synchronous call
This error may occur when switching between windows and applications while using Design Manager.
To fix this problem the Design Manager Assistant must be disabled.
How to Fix: Disable Design Manager Assistant
Click “Help” on the Design Manager toolbar.
Uncheck “Show Assistant”.
3. Exit Design Manager and log back in.