Autocad won't start: JSON Parse error

[jarrett]

Roughly 10 days ago, I downloaded the free trial of Autocad LT 2015. For those roughly 10 days, I used the software without issue. But today, when I launched Autocad, instead of the normal trial screen, I saw an Autodesk ID sign-in screen. (Please see the attached screenshot.)

I attempted to sign in with my correct credentials, but the application said that the ID or password was wrong. I changed my Autodesk password, thinking that might resolve the issue. I also took the opportunity to update my email address, which was outdated.

I attempted to sign in again with my new password. This time, I got the error message shown in the attached screenshot. The text of the error message is:

parsererror SyntaxError: JSON Parse error: Unexpected identifier "Notice"

This is as far as I have gotten. I am unable to use Autocad pending resolution of this issue. Thank you in advance for any assistance you can provide.

[pendean]

Nothing attached.
Sounds like you just need to log out of Autodesk360 (or uninstall it from Windows Control Panel), assuming your trial did not run out of course.

[jarrett]

I'll try the attachment again. By the way, this is Autocad LT 2015 Mac. My apologies for not mentioning that originally. I don't believe I have Autodesk 360. Is it a prerequisite? (I'm assuming not, as you suggested uninstalling it.)

[pendean]

MAC forum is elsewhere http://forums.autodesk.com/t5/autocad-for-mac/ct-p/3011