I reported the following issue to StackIdeas:
I am wondering if my dead profile link is related to the last update of EasyDiscuss.
In response they indicated the following:
Yes, we have fixed the user profile field part but this issue is not related to EasyDiscuss, you can check my attached screenshot of the full error backtrace log, I think you have to send this screenshot to the T4 developer regarding this.
A link to StackIdeas screenshot is in the "FTP info" text field.