Thanks and welcome aboard to the Community, @akumar99.

Let's get rid of the error message when saving new To-Do tasks within the program. You can start the troubleshooting by running the QuickBooks Desktop Tool Hub to fix any issues.

Here's how:

1. Close QuickBooks.
2. Download the QuickBooks Tool Hub file. 
3. Open the file.
4. Follow the on-screen instructions.
5. Once installed, double-click the icon on your desktop.

For the detailed instructions and visual reference of the process, please visit the Fix common problems and errors with the QuickBooks Desktop Tool Hub article. Aside from that, it contains some important notes that you should know.

Please don't hesitate to reach out to me if you have additional questions or concerns. I'm always up to lend a hand.