arcade problem

[butty]

heres one for all you brainboxes!

right i have vbadvanced installed and i have wrapped the vbadvanced paged around the arcade as described in this post here

http://www.vbadvanced.com/membersarea.php?do=viewusermanual&productid=4&pageid=6

this is basically so that i can have the navigation menu to the left (see attached image)

now it all seemed ok.... until! :)

i tried to submit a score after a played a game. it gave me the following error:

Fatal error: Call to undefined function: print_portal_output() in /home/pianohea/public_html/forum/includes/functions.php on line 4864

hope someone can help me with this. many thanks!