Ohh Just incase you need it here is a list of the mods i have installed. Maybe this will help you see whitch mod may be causing this problem

YaBB 1 Gold - SP 1.1\extra_message_fields.mod

YaBB 1 Gold - SP 1.1\extra_message_polls_patch.mod

YaBB 1 Gold - SP 1.1\mbc2_sp11.mod

YaBB 1 Gold - SP 1.1\Polls.mod

YaBB 1 Gold - SP 1.1\quickreply_beta3.mod

YaBB 1 Gold - SP 1.1\chat_bubbles_sp1.mod

YaBB 1 Gold - SP 1.1\chat_v1_94.mod

YaBB 1 Gold - SP 1.1\addsmilies2.mod

YaBB 1 Gold - SP 1.1\has_image_2.mod

YaBB 1 Gold - SP 1.1\new_indicator_bugfix_sp1.mod

YaBB 1 Gold - SP 1.1\keepanimatedsmilies.mod

YaBB 1 Gold - SP 1.1\file_attachment.mod

YaBB 1 Gold - SP 1.1\moderationupdate.mod

YaBB 1 Gold - SP 1.1\adv_memberview_plus.mod

YaBB 1 Gold - SP 1.1\yams353_sp11.mod

YaBB 1 Gold - SP 1.1\AdvancedLogAnalysis.mod

YaBB 1 Gold - SP 1.1\all_sp11.mod

YaBB 1 Gold - SP 1.1\no_guest_email.mod

YaBB 1 Gold - SP 1.1\mbco2_and_quick_reply_box_fix.mod

YaBB 1 Gold - SP 1.1\advanced_imbox_sp1_11.mod

YaBB 1 Gold - SP 1.1\mediaplayer_SP11_beta5.mod