AutoCAD not snapping to grid lines grid not lined up to 0,0

Change UCS to world
Type UCS
W

DWF The data in the field is corrupted

Use the Exportdwf command to export and the DwfAttach to attach.
Exportdwf
DwfAttach

Errors:
The data in the field is corrupted
The file id an earlier format that is no longer supported
The file format is not supported