afaik upgraded a couple addons including bbcode... core needs updating but client doesn't want any downtime 
1 2013-01-08 17:29
Re: Bug in Ext Pun_BBCode: bar is missing - Parse error in code (23 replies, posted in PunBB 1.3 bug reports)
2 2012-12-27 21:18
Re: Bug in Ext Pun_BBCode: bar is missing - Parse error in code (23 replies, posted in PunBB 1.3 bug reports)
ironically having this issue as well... does not seem to be footer related. I updated the bbcode button module to 1.3.6, and seems it's now broken...