After you file

That is a Mac issue then, not a TurboTax issue.

Your "TAXES" folder mist have lost its RW permissions.  

I suggest restarting your Mac.

 

Use File -> Get Info  on that folder to see the permissions or modify them.

 

   If it persists then seek Apple support.

**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**