I had a similar problem with news 1.63 seo and XOOPS 2.3.3 and fckeditor.
What worked for me is:
in modules/news/class/class.newsstory.php, find
le="color: #000000"><?php $hometext = $myts->displayTarea($this->hometext,$html,$smiley,$xcodes);
and replace it by
le="color: #000000"><?php $hometext = $myts->displayTarea($this->hometext,$html,$smiley,$xcodes,1,0);
then find
le="color: #000000"><?php $hometext = $myts->previewTarea($this->hometext,$html,$smiley,$xcodes);
replace it by
le="color: #000000"><?php $hometext = $myts->previewTarea($this->hometext,$html,$smiley,$xcodes,1,0);
then find
le="color: #000000"><?php $bodytext = $myts->displayTarea($this->bodytext,$html,$smiley,$xcodes);
and replace by
le="color: #000000"><?php $bodytext = $myts->displayTarea($this->bodytext,$html,$smiley,$xcodes,1,0);
finally find
le="color: #000000"><?php $bodytext = $myts->previewTarea($this->bodytext,$html,$smiley,$xcodes); [code] and replace by [code] $bodytext = $myts->previewTarea($this->bodytext,$html,$smiley,$xcodes,1,0);
hope this solves your problem