NextGen Gallery v2.0.61
JM Twitter Cards v5.2.2
In the Post ATP functionality (Attach-to-post) I get an error:
Fatal error: Class 'JM_TC_Tabs' not found in /home/davide/apps/velvetnetwork/new-version-merge/wp-content/plugins/jm-twitter-cards/jm-twitter-cards.php on line 192