CAD tip # 7549:

Another problem may be in the relatively referenced external files - on a different computer, they may resolve to a wrong referenced file (in another path).

That's why it is important to have all information about external references from the given DWG drawing. The free utility CADstudio Depends displays a list of references including full paths which they are currently loaded from - i.e. where they were found (resolved) in the current AutoCAD session. The add-on application Depends can display either the individual types of external links separately, or all links (references) at once. You can choose (see the option Settings) between the short name or the full path of the external files.

A separate option unResolved can list xrefs which were not found.

Besides displaying the results, the application also fills the LISP variables _DEPENDLIST (a list) and _DEPENDSTRING (a string), which you can use for processing the results in your own macros, or for copying the result text:
(princ _DEPENDSTRING)(prin1)
or for inserting the overview of external references as a text into your drawing - you can use this variable in a text field (see FIELD > Lisp variable > _dependstring).

A sample output from the DEPENDS utility:

  
Command: depends  
 
List dependencies of type  
[Xref/Image/Font/Weblight/Material/Plotconfig/Datalink/Underlay/sHeetset/unResolved/Settings/All] < All>: All  
 
XREFS:  
C:\Users\JSmith\Documents\B1-level.dwg  
 
IMAGES:  
C:\Users\JSmith\Documents\CompanyLogo.png  
 
FONTS+SHAPES:  
C:\Users\JSmith\appdata\roaming\autodesk\autocad 2011\r18.1\enu\support\ltype.shx  
C:\Windows\FONTS\arial.ttf  

WEBLIGHTS:
-none-

MATERIAL IMAGES:
-none-

PLOTCONFIGS:  
C:\Users\JSmith\appdata\roaming\autodesk\autocad 2011\r18.1\enu\plotters\MyPlot.pc3  
 
DATALINKS:  
C:\Users\JSmith\Documents\test\test-table.dxe  
C:\Users\JSmith\Documents\test\my-blocks.dxe  
 
UNDERLAYS:  
C:\Users\JSmith\Documents\FactoryMap.dgn {Model}  
C:\Users\JSmith\Documents\OldStatus.pdf {1}  
C:\Users\JSmith\Documents\FinalReport.pdf {2}  
C:\Users\JSmith\Documents\Surveyor1.dwf {Model}  
C:\Users\JSmith\Documents\BIM-data.nwd  
C:\Users\JSmith\Documents\Points.rcp