Josh..the safeguard mode is a seperate issue that may be an issue with bad tapes (TDK and Maxell seem to not work as well as Panasonic or JVC)...the Lens Cap message may be a defect issue covered by JVC. you can contact JVC on the Lens Cap message but the safeguard message may be a seperate repair issue if tapes are not the problem. The Lens Cap issue can possibly be repaired at not charge...contact JVC for more info:
CCD Program for This Model - GR-D72US
JVC has received reports that in certain circumstances, this model may, while in the camera mode, show no picture, a distorted picture and/or display “LENS CAP” even though the lens cap is removed. We have identified the probable cause as a failure of the CCD image sensor. Until October 1, 2007, repairs of units exhibiting these problems as a result of a defect in the CCD image sensor will be made free of charge at JVC Factory Service Centers. Click this Repair Request link to download a Repair Request Form and find your nearest location.
Please call our Customer Care Center at (800) 858-6442 if you encounter any problems in obtaining a free repair. We apologize for any inconvenience and are appreciative of your understanding and support