Peter, my problem is probably because it is not compatible at all. But I couldn't find the answer to this so I am sending it to you directly.
Basically, I tried to upgrade to DMX 3.5.5 from DMX 3.4.6 because notification feature when you subscribe to a folder does not work. I ran the upgrade and the process went successfully. However, I ran into this error:
"Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified."
So I reverted back to my original.
It seems like a sign that DMX 3.5.5 is not compatible with DNN 4.4.1. Could you confirm this?
How can I fix my problem with the subscription notification feature not working with DMX 3.4.6 on DNN 4.4.1?
I appreciate your help.
Ryan