When tried with someone elses account:
Is there a naming standard for REDIRECT URIS OAuth 2.0?
http://www.devcurry.com/2013/01/connect-to-linkedin-using-oauth-in.html
When tried with someone elses account:
Is there a naming standard for REDIRECT URIS OAuth 2.0?
http://www.devcurry.com/2013/01/connect-to-linkedin-using-oauth-in.html
I have managed to solve this problem. I was having this issue connecting my profile with 3rd party apps.
There are two possible solutions:
My issue was #2. I had a verified primary email, but once I put in another one, it worked.
You can also try removing the 3rd party app access from your account and allowing access again.