Forum Linear display issue

[محروم.كوم]

I am running 4.1.5 on a test server and worked well so far however when I go into a thread the whole layout is suddenly messed up.. See attachment

Above the layout I get following message: Warning: implode() [function.implode]: Invalid arguments passed in [path]/showthread.php on line 938

Looking into that line:
Code:
// '0' inside parenthesis in unlikely case we have no ids for this page
// (this could happen if the replycount is wrong in the db)
$postids = "post.postid IN (0" . implode(',', $ids) . ")";
When I switch to hybrid or threaded mode I have no issues

Any help would be appreciated
Michael
Attached Images

• Screen Shot 2012-12-15 at 10.06.50 AM.png‎ (122.7 KB)

__DEFINE_LIKE_SHARE__