hi i was working on a autocad drawing, and almost finished it but I opened a block located in the layout in the block editor and I wouldn't let me close it so I saved the drawing closed it and when i reopened it the dwg only hay the saved version of my layout block but IN THE MODEL. is there anyway i can restore to my old model! i mean its like 5days work i'm loosing here. i have no sv$ and the bak file has the same content as it saved itself the same as the dwg. It looks like it replaced my model! ANY IDEAS??? PLEASE HELP ME!!!!don't know why but the block now appears exploded on my model and the rest is empty. I even had mviews / viewports in the layout to stuff on my model and now the viewports are empty! is there an UNDO after save option??? lol I DON'T KNOW! but its 4 days of work!
corderjos2011-03-15 16:39:33

Did you do a zoom extents in model space?

yes, i only have the new block.....nothing else its weird!its like it replaced my model all layers are on, i even have the blocks i had in the insert command but none of them are inrserted!corderjos2011-03-15 16:52:15

Can you post the drawing so someone here can have a look at it?

how do i load the cad drawing?

Read this thread.http://www.cadforum.cz/forum_en/forum_posts.asp?TID=5421&PID=13802#13802

Were you by any chance editing an xref in place when this happened?

I cant seem to be able to load the dwg. And to the other question no it was a regular block

OK, that was weird.You may already lost your drawing. Your only option is the backup file, but you don't have them too. It looks like AutoCAD save your block as your drawing. 

yes that is exactly what happened! and the bak file has the same content...so i guess i lost my 4 days work!

You were editing a block.  The block has its own name.  Therefore, how did AutoCAD save the drawing under the block name?

i don't know that's the weird part.... i save inside the block editor as i couldn't close it don't know why. I know that if its an external reference or if u're editing the block in place u won't be able to save the file, but from the block editor you can. so i saved and closed autocad as i seemed to have problems. when i reopened the file all it had in it was the block i was working on and it had moved itself as an exploded block in model space (it was inserted in the paper space / layout) and in the layout it is still a block. In the layout i have all my viewports but now with empty content since the model only has the paper block.

You don't backup your CAD files to another media like a flash drive, CD or DVD?  Are you on a network or a standalone computer?

If the dwg file is stored on a server somewhere, depending on the server O/S, it may create backups, like with Microsoft Server 2003, and if so, then you can try to right click on the dwg file, go to properties, and the (if it's there) Previous Versions tab.

If something there shows up, you can copy or overwrite (I suggest copy, don't want to trash what you have left of the original)

Don't know what other operating systems support that option.

To answer one other question of yours there is no option to UNDO a SAVE.