I need to modify a layout, but the Edit layout button is grayed out and there is no Layout mode under view. This is only the case for two layouts out of the 30 or so I have. All the others I can modify without changing any other settings.
I've looked under scripts, layouts, database, even trolled through the Database Design Report--don't see anything that could be causing this.
Sounds like you are in a restricted privilege set or have a custom menu installed. Are you the original developer of this file?
If you know you have a full access account, then it's likely the custom menu. In FileMaker Pro Advanced, you can go to the Tools > Custom Menus > [Standard FileMaker Menus]
which should disable any custom menu put in place.
If you are not the original developer and do not have a full access account, you will need to contact the original developer to get your privileges unlocked.