recieving error on search pages

[DoB Rhapsody]

Hi everyone,

I have a little issue. After making a few changes to my forum, i'm now receiving an error on all search pages.

Warning: Invalid argument supplied for foreach() in [path]/search.php on line 3070

Warning: implode() [function.implode]: Invalid arguments passed in [path]/search.php on line 3074

Changes made:

Removed 6 forums with about a total of 4000+ topics.
disabled rss poster that posted in those forums.
removed a plugin that excluded those forums from today's posts.
made use of the $includephp on a vba page.

Hopefully this is enough info to help you help me
The error is occurring at the top of the page and does not interfere with search queries, it just needs to be resolved.