[SOLVED] Problem with plugin and editing post

Hi,

When I try to add new post or edit old post, I cannot write in the body text.
It won't let me type. I cannot add any picture.

It happened all of a sudden. I'm using wordpress 3.0 and atahualpa 3.49

I thought to desactivate plugin and reactivate in case that was the problem but when I did it, that message came up a few times:

the plugin generated 5 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.


My site was hacked a month ago, I got it fix. I hope it's not happening again...

Thanks,

julia