rifkin - the cause of this issue has been identified and fixed by our developers in the meantime. In order to resolve this issue, please delete the folder %temp%\Enscape\Assets and restart Enscape. This will trigger a re-download of the assets.
You can also find the folder via this path: C:\Users\%username%\AppData\Local\Temp\Enscape\Assets\
Please allow us to apologize for any inconvenience this has caused!