Okay so this is VERY strange. After putting in the shadowclaw I've lost the imperials victory ISD and Acclamator. Has anyone else had this happen and know how to correct it?? The two units are still missing even after I've removed the shadowclaw and I'm not entirely certain what the smeg I've done wrong.

Most likely you accidently erased the two units from the .xml files. Replace the modified files back with the regular unit files and then re-edit them to add in the shadowclaw.

Nope. Already done that, although it seems that ALL the cruisers are missing. Looks like it must be something else.

Umm.... not sure what you've done exactly but the only way to stop the orginal units from being loaded into the game :

1) Have a file named the same as the original file in the '\XML\' which doesn't have those units in.

2) Remove the entry which calls that particular file within 'GameObjectFiles.xml'.

 

Only only thing I can thing of is ARE YOU SURE those are the original files.

 

We can only help you further if we knew what you did between you last time you had the units, and the time you noticed they were gone, sry.