Ever since installing Dell Open Manage on one of my servers, a Dell Power Edge 1600SC the built in MS disk defragmenter does not function.  When clicking on disk defragmenter I receive the message:

"This version of disk defragmenter does not support running more than one instance".

Has anyone seen this before?  Any ideas?  What are the potential issues if I uninstall Dell Open Manage.  Will it potentially blue screen my server on the way back up?

Any and all help is appreciated.

Rich