you posted in the consumer general discussion forum - this is an enterprise product, and thus you'll get more help posting in business/data protection.
it seems that the installed product of DLP corrupted.
did you try to remove product from that client directly i mean by generating uninstall code from EPO?
if the answer is not so try it....
and if you cant see the McAfee DLP Product on the program and features i would like to recommend a trick for it
please install McAfee DLP 9.3 Manually on that computer over exiting version
please try above solutions and do not hesitate to contact me if the problem persist