# finding a link or material pointing to a missing file or path

In packing a blend file I get a report of 3 missing files (actually, only paths) from an FBX imported from a 3dsMax export:

Error: Unable to pack file, source path 'C:\Users\James\Documents\3dsMax\projects\architecture\scenes' not found


(aside: this path actually exists) I am not getting any console output in 2.90 for "List Missing Files". Is there some way I can discover what material or other file pointer are causing these errors so that I can correct them?