Does anyone else have a problem with lost Xref path when attaching a file using relative pathing? We are using Autocad 2010 and Windows 7. If we attach the same file using Windows XP the problem does not happen.
Win7 has nothing to do with AutoCAD not finding an Xref: most likely it's the pathing that is incorrect.
provide an overview of what the full path and the relative path are being reported inside AutoCAD in both Windows versions for others to review and help: your initial post has no usable information (and we all use Win7 and relative paths for Xrefs and have no such problems).