Does not support format

I just upgrade to 64.bit Draftsight and now I have problem when I save DWG files.

My saved files can't be read in 32-bit Draftsight (even if i take old files from 32-bit files and just open/save them in 64-bit).

 

I has also problem with swedish letters, but I suppose that is a font problem.

Sören Larsson