Publishing/Updating error message…

I keep receiving a warning: in_array() (function.in-array) message, and I’m not sure what to do about it. (I’m savvy, but no web guru…)

The second error states that my request “cannot modify header information” then it tells me the fail is within the functions.php, line 2439, and pluggable.php, line 934.

I changed the theme a few times because I couldn’t decide which one I liked best. Although, I fell in love with Minimatica when I first installed, but I couldn’t figure out the gallery bit. Hence, the switches.

Now, I’m back with it, and I’ve published posts. Have another question, but I’ll leave that for another topic. 🙂

Any help is greatly appreciated!