Hi
With the latest update 1.51g (java 8) we currently get the following error
Java.app/plugins/Scripts/Plugins/Registration/Correct_3D_drift.py", line 16, in <module>
from javax.vecmath import Point3i
A similar issue has already been reported by mysself on Bugzilla
http://fiji.sc/bugzilla/show_bug.cgi?id=1216