UPDATED!!
Here's the update message I sent out -
As many have noticed I'm on a bug squashing and obliterating mission!
I had hoped to get a few more minor bugs fixed in this version but
finally found the most elusive and meanest one which was causing people to
get errors when replying to some threads.
The criteria to cause this bug was:
A user must be subscribed to the thread, the thread must be in a forum
that email integration has been enabled. That user must not be
subscribed for instant notification to the forum... only the thread.
Then you would get the error.
I've added a quick fix for the error in 2.5.4
Please upgrade.
If you notice any quirks... bugs... or issues... PLEASE let me know.
I'm devoted to making this a solid modification but I rely on your input
Thank you for your support and patience!
~ Chris