Just curious how to fix this problem. I just installed the Opt In Email 4.0 module on DNN ver 4.9.2. Install went great...no errors. I drop the Opt-In Email module on the page for the first time and go to the Setup Opt In Lists links and get the following error.
A critical error has occurred.
Object reference not set to an instance of an object
I get the same error trying to access the Control Panel as well as Setup initial Settings...not sure where to go from here.
Ajax is installed and running if that helps.
hope someone can help
Thanks for your time