Update 3.9.1.0 error

@Wiserock Welcome to the Rockstor community and thanks for reporting your findings.

Glad you got it sorted. @rtharston in that thread experienced the same and seems to have confirmed the cause to be an interrupted upgrade. This is a UI failure on our part and we have an open issue for this now curtesy of @doenietzomoeilijk:

As for the updated kernel failure to install you could take the same tack and try, via a root console:

yum install kernel-ml-4.12.4-1.el7.elrepo.x86_64

This may give some hints as to why this has not happened automatically.