problem oninstalling of ge complicity machine edition

Hello,
I'm still pretty new at working with GE PLC.
herei decide to start with asking just one question firstly.
someone here can help out with this .

i try to install the CIMPLICITY MACHINE EDITION 4 DAYS EXPIRY VERSION,
every four days i have to uninstall and reinstall,.......................
but today i found when i reinstall the program again.
it told that some files are failed to register.

here is the image;