I spotted a JS conflict that occurs when using MP6 in combination with the Wysija Newsletters plugin.
Wysija Newslettters Version 2.5.5
MP6 Version 2.0
- Install and activate both plugins
- Go to into menu item Wysija > Newsletters
- Click on the first newsletter (titled "5 Minute User Guide - Draft ")
- Select a default list and click on "Next Step"
- On the "step 2" page, scroll to the bottom, and click the button "Send Preview".
You should see a little modal window opening (you can see it work if you disable MP6).
Error: TypeError: $element.parent is not a function
Source File: http://example.com/wp-content/plugins/mp6/js/svg-painter.js?ver=1377976669
This issue appeared very recently.