FYI...I got the "failed to open stream" error mentioned in this thread first:
Warning: main Failed to open stream error.
Then found that thread and uploaded the quickcom367.tmpl file and thought it was fixed because the error disappeared...but now we have this problem. VB3 Enhanced integration is on, but it was on before the upgrade as well and things were working fine.
I turned off the VB3 Enhanced features and the comment box is there now.
Just thought a little more info might help.