tried draftsight for the first time.i edited my existing autocad drawing last night in draftsight then save it as a r2010 dwg. when i opened the file this morning in draftsight, the filename changed to noname.dwg and the sheet's empty. i tried to do a file recovery but it didn't work. is draftsight really like this? it seems like it's not a stable software to use. i'm scared my files will get wiped out if i use it again.

this is what appeared when i opened my file:

http://tinypic.com/r/p147a/5

please help!