First of all, I feel my English is not perfect. I write this post to report the user FTR does not work, or new users, or all users. I tried to create users and do not see it.

thanks and hopefully I can be solved.

There is a global switch in ACP => Configuration => Icy Phoenix => SQL Optimization did you enable it?

Take notice of this bug too :
FTR Issue
Be careful to do not desactivate FTR from ACP > General > Force Topic Read.

Can you please provide me with full instructions on how to replicate it on a new installation?

My own FTR Issue ?
It's simple :

- Download & install IP ( 1.3.1.53 or patch A, there's the same prob )
- Go on your ACP > Configuration > Icy Phoenix > Posting & Messages then set the line " Completely disable Force Topic Read " to " yes ".
- Go on your ACP > General > Force Topic Read and turn FTR off ( set the line " Deactivate FTR? " to " yes " ).

Then open your forum and you will get a blank page =/
If I can say something, you could fix it in 30sec by moving the link " Disable FTR " from ACP > Configuration > Icy Phoenix > Posting & Messages to ACP > General > Force Topic Read. 2 links for disable the same option is a bit useless IMHO ( or maybe FTR enable other processes which could be use for another mod/option ? )

I hope it will help you.

Thanks for explaining, I have solved it in latest SVN, but those changes may not be reflected in Icy Phoenix 1.3 because the code is too different.

I will try to provide a patch for that as soon as I have some free time.