If you have already this hanging status, you have to completely uninstall the TV-server with deletion of all registry settings to revert back to an accessible status.
I discovered that the plugin seems to work if you avoid to leave the plugin screen on the first tab (meaning the tab where you handle the import)
Seems like it hangs if you leave from there and go to other config menu elements.
My personal approach is to set the plugin to the channel association tab of the plugin before leaving.
You can (so far) safely return and access the plugin.
@flokel
Kannst Du ungefähr abschätzen wann ein update kommt ?