specs.def and cell.def are included in cyflex.6.3 versions

For cyflex.6.3 versions, the specs.def and cell.def directories have been moved under the cyflex directory in order to keep those files version specific. You will find them at /cyflex/specs.def and /cyflex/cell.def

The files under the /specs.def and /cell.def directories are no longer maintained.  If you are running a cyflex.6.3 version, the /cell.def and /specs.def directories should be removed with the following commands:  
sudo yum remove cell.def
sudo yum remove specs.def