Can't save arrowheads.ai file to create custom arrowhead

[jcarch1000]

I'm creating a custom arrowhead, following the steps outlined here.

I open arrowheads.ai, create the arrowhead, add it to the symbols palette, name it, etc.

But when I go to save the file arrowheads.ai, I can't save the file, getting this error message:

I'm working on AI CS5, on Windows 7.  Thanks for any help on this.

[mjbelt · Accepted solution]

Change the permissions options:

How to Change File Permissions on Windows 7 (with Pictures)

Other option change the name of ai. file and try opening up file.

https://superuser.com/questions/562421/win7-set-write-permission-for-user-without-read-access

[jcarch1000]

Thanks mjbelt, that did it.  Thought as an admin level user, I'd have all permissions needed, but I guess not.

[Ton Frederiks]

Save it on the desktop, close Illustrator and replace the file?