Can Zipper be run more than once on a drive?

[ARC]

I ran zipper from boot CD, but could not get sh to execute afterwards. I did see a "cp" error during zipper, so I am wondering if one can re-run zipper?
The drive currently "works" in the TiVo HR10-250 box, and is able to record/play shows just fine, but no hacks are installed since tweak.sh refuses to run.
Would zipper'ing the drive again cause death and destruction?

[ttodd1]

"death and destruction" would be if you used a new image on it and wanted to keep any recordings, otherwise I think yes you can run it as many times as you'd like.

[ARC]

after running zipper again, replacing the drive into the TiVo, I get through the Welcome. Powering up.... message, followed by the "Almost there. Just a few minutes more..., only to then see a black screen with:

ERROR: Unexpected CPU revision

message. That does not go away. If I could only chew through these restraints I might say hello to Harry Kiri

I put it back into the pc and repeated the zipper, and get the same results. fascinating error: unexpected CPU revision....

any suggestions or diagnostics would be appreciated....what does UNEXPECTED CPU REVISION mean and how to I persuade it that I have NOT changed my CPU? I was careful with the 3-digit service number...