A couple of months ago I had an error on the RAID1 array on my home computer (a smaller brother of yours). I read everything I could find on Google and Yahoo searches on RAID failure mechanisms, but didn't see anything on incompatibilities with disk imaging software. In principle there shouldn't be a problem, but there are some fairly low-level processes involved so they can't be ruled out.
The array failure occurred during the replacement of a faulty CD/DVD reader. At some stage the drive letters for the various optical and hard drives became confused, a situation complicated by the fact that the healthy array is represented by a single letter (C:) while the degraded array was assigned two (C: and F:) for the separate disks. It is possible that a similar mechanism applies in your case, but I don't know enough about how XP and Ghost assign, maintain and use the drive letters to speculate on its nature.