Marcel - I do not have an official case opened. Every time I have tried or discussed it, no one at LANDesk seems able to reproduce the problem.
We currently get around it by using robocopy to do similar to what Peter posted.
The correct documented process from LANDesk is to re-deploy the agent.... anything else would be considered a "work around".
Peter - Did you get the script from this location? I have not checked my core, but I do not believe there was an update script in the default installation. Updating the WinPE image on PXE representatives
I've just pinged our TAM to open an official support case.