File suddenly become NOT modifiable
Operating system version
Description of the issue
I have been developing my database with FileMaker 11. I seperate the data with my layout/reports in different database so that I can minimize the inconvenience caused to my users when I change and modify the layouts.
When I want to make some changes to an existing layout yesterday, I was suddenly being prompt to an error message: "The action cannot be performed because this file is not modifiable." However, I have NOT put any security setting in place. May I know what is the problem and how I can resolve it?