Face-to-face (plugin)

We upgraded to Moodle 2.8.6+ (Build: 20150604) and had facetoface working prior to the upgrade but after upgrading it no longer works. I removed and reinstalled but facetoface Release 2.8.0 (Build: 2015021300) gives error messages or blank screens when you try to set up an activity. I ultimately removed it and installed 2.3.1 build 2014030600 and it works great. Not sure what the issue is but am glad to have it working again.