We have discovered a glitch with DXF files and Anagraph.
When downloading a DXF to use in Anagraph, you will need to first open the file in another program, such as COREL DRAW! then save it back to disk as a DXF to re-open in Anagraph. 
We don't know why.  
Try to download JBS files, if available.
 Questions, suggestions, email, addes@adstone.com