I am using OpenTok to call another person, but the other person's call to me is not coming and logcat gives this info:
Session error: Invalid token. Make sure you're using the latest OpenTok server SDK
You are probably generating an invalid token for the other person. Make sure your server code is passing in the correct parameters to generate tokens: https://tokbox.com/developer/sdks/server/
Also, to debug your tokens, remove the string 'T1==' from the front of the token and base64 decode it. The decoded string should contain a sessionId and apiKey.