I am glad it works for you now! And thanks for the local thanks too!
To avoid such problems in future, I recommend to transfer archives instead of files themselves. Simply pack everything in source Amiga environment (eg. with LZX), transfer the archive and unpack it at destination Amiga environment.
AmiKit 8 cannot be upgraded to X version, but theoretically you should be able to take working hardfile from AmiKit X and use it with UAE4ARM. Just make sure you set a lower screenmode before you use it with UAE4ARM as it doesn’t support larger ones yet.