Pardon me if i am mistaken, but i am certain that ROMPatcher looks for those files in C:\Sys\bin. In my first attempt at flashing, i put them in Z:\Sys\bin like you are saying, but ROMPatcher was not working that way. Also, the OS update patches are all to be installed on C:\ anyway, so it is rather important for the UDA to flash correctly.
In the end, hacking post-flashing is not really a big deal, but i will keep trying to get it right.
The positive thing is that the CFW is performing perfectly
Thank you for consistently answering my posts and offering your help, mate.