I'm the author of ldprep. What version of ldprep are you using? A couple of versions ago, ldprep had a problem whereby DevicePath was blanked out when there was nothing to add. This was fixed in V18.104.22.168. The current version posted on my blog is V1.7.1. Please try that version. If you still have a problem then please post ldprep's log.
Ldprep freezes? That's probably just your impression. Ldprep is unusual in that it writes to the command line even though it is a windows program. In the normal case of a console program writing to stdout, you'll see the program's output followed by a command prompt. In the unusual case of a windows program writing to the console, you'll get the command prompt first, followed by the program's output. If you're sitting there waiting for the command prompt that you believe should follow the program output, you'll wait forever, not realising that the command prompt was there all along...
Thanks for the reply! It looks like we are running an older version of ldprep... V22.214.171.124 ... I will download the new tool set and give it a try!
I should have checked to see if there was a new version!! Do you always post the updated tools in your blog?