G6, he is asking for help with TP, he didn't get a chance to install the arcade mod. He was going to but when he switched back to the default theme his forum threw that error.
should be a simple fix actually,
Fatal error: Cannot redeclare updatechatstats() (previously declared in /home/teengene/public_html/Sources/Load.php(1823) : eval()'d code:705) in /home/teengene/public_html/Sources/Load.php(1823) : eval()'d code on line 739
Open the load.php and remove the extra updatechatstats. There are two in that file looks like one on/around line 705 and one on/around 739.
How you ended up with two definitions of that function can happen from multiple different things. I won't guess about it.
AS ALWAYS BACK THE FILE UP BEFORE YOU EDIT IT.
That should get you back on the road.