Hi,
I just purchased Sketch up pro and am having a bit of problem importing the cad files to Sketch up.....last night, i imported my plans from Cad and this morning i tried to do the same thing with my modified plans, sketchup keeps on bringing a msg saying,
"Invalid DWG version. This does not appear to be a valid DWG or DXF file or the file is write protected" ..... i tried everything but i may have overlooked something. Can anyone help me on how to fix this problem asap.

Cheers.
G!