Hello.
I have had this problem before, but I cannot remember how it was fixed. So I hope to resolve it now...
I did once make the mistake to make backup of my WDP to the original USB-stick. After that, all seems to still work OK. But when I try to install WDP again, on another PC, installation stops with an error-message:
The cabinet file 'Data1.Cab' required for this installation is corrupt and cannot be used.
I checked the USB-stick, the file IS there, with size 101814272 and date 08.04.2015. It seems to be OK.
I did have this solved once before, but I cannot remember HOW. And as I no longer have my old PC, the info/help I received last time, is lost.
Any help?
Best regards,
Per.