Hi man,
wassssuppp ?
i think i found the issue here...
i'm running SU6 and i found 2 issues:
1.Sketchup didn't recognize my path to the folder...
or that it was unable to read my file name (i had some files in Latin language)...
solution:
create a "tmp" folder under π drive (i.e. "C:\my_dwg") and export the file (DWG) to there (give it a simple name like "try")and import to sketchup from there.
and ONLY after removed those illegle charecters sketchup was able to load it ...
hope i'ved help u...
let me know if i didn't and will try to figure something for u.
Shto