Can you please help. I'm getting a msg that sys Check This Entry Sch SE-S Your calculations could not be completed. Reference code 4-276-640

There had been an issue with Schedule SE. 

Please make sure your TurboTax program is up-to-date. 

TurboTax Online updates automatically each time it's opened.  

For TurboTax Desktop, you need to click "Online" and then "Update"

Delete the Schedule SE, a new one should be generated and the error should be eliminated. 

ONLINE:

Sign in to your online account

Continue working on your return

Click Tax Tools on the left side bar

Click Tools on the drop-down

Click "Delete a form" on the “Tools Center” screen

Scroll down the list and find Schedule SE then click Delete

Confirm the delete