Thank you for your post.
I am not aware of any script steps that are not compatible between browsers, but obviously, you have an example. Can you post the script so I can try it here?
Basically these scripts go back a page and erase a message:
Set Field[Headers::Message to user; " "]
Go to Layout[Warfare Areas]
Go to Record/Request[First]
Never Mind, I found the problem and it had nothing to do with my script. I knew I had to be making a silly mistake.
My buttons were to close to another layout object (overlapping a little) and while Internet Explorer had no problem with this Firefox did.