If you are using the evernote and RTM integration you might be interested in this little piece of information. RTM introduce this integration exactly 6 months ago and the original authorization was valid for 6 months so it is possible that your evenote/RTM stop working in the coming days if you started using it when it was introduced.
This occurred to me last night and I had to verify with RTM support and they proposed me some steps to investigate and the last one consist in re-authorizing evernote/RTM to work together, which resolved my situation. I then look at my original email from evernote when I did the authorization and saw that the expiration date was yesterday.
I have received no error saying that the authorization was expired, and the sync was no longer working.
If you face that situation, please reauthorize evernote using that page : https://www.rememberthemilk.com/services/evernote/
PS: the new authorization between evernote and RTM will be valid for 1 year instead of 6 months
Posted at 1:31pm on May 31, 2014