Weird "Invalid or expired token" behavior



We’re getting a lot of “Invalid or expired token” error when trying to make a call to the API. The Twitter App & the user access are still up. When I’m trying with an other app, everything is ok. Can it be an issue with the API 1.1 ?


I have the same problem, a 2 weeks ago everythintg was ok.


The problem was that I had wrong link to verifying the user. Now everything works ok.