We have just released BaseCamp 4.2.4
You can receive the update here: http://www8.garmin.com/software/BaseCamp_424.exe
Here are the items we have fixed:
Fixed error when deleting the last track point in a track
Fixed 'Arrive Continue' guidance issue on zumo 660 (you will need to re-export your gpx files that had this issue, but not recalculate)
Fixed address search issue when running in languages other than English
Fixed user data from FIT files not being read from the Edge 800
Fixed error when removing user data from a list or list folder
Fixed error when using Trip Planner
Fixed error when selecting a track to create an Adventure from
Also for technical reasons, we will not allow non-Garmin devices to enumerate from within BaseCamp. This is due to the over reaching use of copying files to the system. MTP devices are a notable problem, such as an iPhone 5. If you wish to move pictures from your iPhone 5 to BaseCamp, copy them off the iPhone 5 to your local PC first.
Let us know if you have any issues with this update.