Yes, if you are receiving an error message that is not allowing you to electronically file, you can mail your New York tax return.
New York requires you to e-file if you meet all three of the following requirements:
- You use software to prepare your return
- Your software allows you to electronically file your return
- You have internet access
Since you are not able to electronically file using the software, you would qualify to mail your New York return in. See the following link for more details: NY Electronic filing requirement
You may also want to see this link to help resolve the electronic filing error. E-filing does help get your return processed faster so if you can resolve your error, it would be beneficial to you if you are expecting a refund.