I am having the same problem with Hatch 124E5 & 126FF. The DXF is discarded when you try to open after saving with
Unknown group 74 for table on line 742.
Invalid or incomplete DXF input -- drawing discarded.
I tried to back save file to R14 dwg but still had the same issue... I am using Acad 2012 on Win 7 & have the same problem with Acad 2006 LT on XP
Anyone know how to fix this???
Thanks In Advance