Same problem for me. I am using get shortcode in my template. My site now says…
Twitter outputted an error:
The Twitter REST API v1 is no longer active. Please migrate to API v1.1. https://dev.twitter.com/docs/api/1.1/overview.
I actually had to go to my plugin in “Settings” then update the API from 1.0 to 1.1, then went here: https://dev.twitter.com/apps/new, and follow the instructions shown in this post: http://www.prophoto.com/support/twitter-api-credentials/ to get my credentials to work in 1.1.
Anonymous User 9905372
(@anonymized-9905372)
Sorry that I’m late to the party, but the instructions were all there 😀 – I’ve even made a video for all the users.
http://wordpress.org/plugins/twitget/other_notes/
Cheers!