Could not save because file is locked?

When you try to save a file and see the error message "Could not save because file is locked," it means that the file is currently open and in use by another program on your computer. This can happen if you're trying to save the file while it's open in another program, or if the file is open in a program that doesn't have permission to make changes to it. To fix this, you'll need to close the program that's currently using the file. If you're not sure which program it is, you can try restarting your computer, which will close all open programs. Once the program is closed, you should be able to save your file without any problems. If you're still having trouble, it's possible that the file is corrupt or damaged. In this case, you won't be able to save it and you'll need to create a new file.