i have a client using 2007 architectural desktop and i'm presently using 2006. the problem comes with saving 2007 drawings down so i can use them. there is not a 2006 and when he saves it down to a lesser version i lost the architectural desktop attributes (i.e. walls become separate entities and does not retain there architectural desktop properties)
also when i use lesser version i keep getting the ARX_ERROR: eNotThatKindOfClass. i see there is a fix for 2004 but not 2006????