UPDATE (6/15/2015): We have resolved the blank plugin panel issue for all InDesign versions. Our 5.5.1 Plugin version will need to be installed in order for the Plugin panels to be restored. The installer for this version of our tools can be downloaded now at http://www.magplus.com
Thank you for your patience and we apologize for the inconvenience.
Note: This issue only applies to Mac OS users, the Windows Plugin was not affected.
(6/13/2015) An issue was discovered on 6/13/2015 that has suddenly caused our InDesign Plugin panels to display blank. We are aware of the issue and are actively investigating.