JDB err Issues with SEP 14

Is anybody else having any issues when applying JDB's to SEP 14 SEPM?

Bit of a strange one I update 6 SEPM's manually using JDB's files using the same files for all 6. Applying SONAR, IPS, SEP 12 Full def, SEP 14 Dark Net & core JDB. 

Most of the SEPM's update no issue but then it happens randomly that the SEP 14 def file err's and the only def it doesn't apply is the 64bit SEP 14 defs and this happens randomly not on the same SEPM's. We then have to wait for a new SEP 14 core def release to apply that one seperatly which seems to be ok.