Hey, a little something about our forum:
We work from oldest reply to latest reply, so if you keep your thread busy before we get to look at it, you will be pushed back at the end of our to-do list.
Maybe you notice the bright yellow alert message at the right:
We aim to respond to all posts within 48 hours (Monday-Friday), but in most cases we usually manage to reply less than 24 hours. We work on the oldest topic first, so adding a new comment will take you to the back of the queue. We do also try our best to reply on weekends if we have time.
the solution to the error that you cannot edit the php files is implied in the error message, you need to set the permissions correctly in order to be able to rewrite the files on your server.
As for your images: Did you regenerate the thumbnails already?