Easy blogging plugin not staying in easy mode on one of my multisites.

I've tried deactivating network plugins that this particular site is using to see if one of them is conflicting with it, to no avail. Also tried synchronizing the addon settings with other multisite networks that aren't having the problem, still no joy. I believe it is a relatively NEW problem, as Easy Blogging was been working fine on this site for over a year. Any help appreciated.