Question about Autodesk AutoCAD 2006

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Autocad file cannot be opened, how can I open it?

I have dwg file that cannot open in autocad program. I can open the file no problem. but after I save and close it, when I try to reopen it. I cannot open it. I see following error message: Drawing file is not valid Can anyone know why this happen and how I can open it? Thank you. Best Regards folks!

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Use the autosave files to recover your work
1. Go to Tools --> Options
2. Inside Options go to the "Files" Tab (far left)
3. Inside the files tab go to: "Automatic Save File Location" and see where the autosave files are stored. (mine where stored at C:\Documents and Settings\USERNAME\Local Settings\Temp)
4. Then access that folder and try to find a file with the same file name but different extension. (The autosave files should have a either a .BAK or a .SV$ extension) (if you can't see the folder, you need to go to Tools --> folder Options --> View --> and Make sure "show hidden files and folders" is SELECTED) .
5. Check the "date modified" of those files, if the date and time makes sense according to when you had the last file crshes, there is a good chance that those files contain the information you need, so there is no need to redraw everything.
6. Change the file extension of the file you think it might be the good one from .bak or .sv$ to .dwg (to be able to change the file extension you need to be able to see it. To do that, on any folder go to Tools --> Folder Options --> View --> and make sure that "Hide extensions for known file types" is UNCHECKED)
7. Use third party software in case the guide about wasnt effective
DWG Repair Toolbox http://www.autocad.repairtoolbox.com/

Posted on Apr 06, 2015

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When saving the file, check to see what file format (extension) it is saving as. On the Save As screen, under the space to type a filename there should be a drop-down menu to select the file type it is saved as.

Posted on Apr 06, 2015

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DWG Repair Kit is a program will show you how to repair dwg files online.
Here the link: http://www.dwg.repair/
Best Regards,
Roger Mason

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My autocad dwg files have been corrupted


Displays a list of all drawing files that were open at the time of a program or system failure. You can preview and open each drawing or backup file to choose which one should be saved as the primary DWG file. After a program or system failure, the Drawing Recovery Manager opens the next time you start the application. Drawing Recovery Manager displays a list of all drawing files that were open. The System Variable RECOVERYMODE controls whether drawing recovery information is recorded after a system failure and whether to show the Drawing Recovery Manager or not.

If you want to help yourself, Autodesk and other AutoCAD users make sure to send in any errors to Autodesk when you see the Customer Error Report dialog box (CER).


Finally a solution that sometimes helps if AutoCAD cannot fix the problem is to try to fix the drawing in another program that can open and save DWG files. The more users having the similar problem the better chance it will be fixed in a service pack or future version. Eventually you might
get DWG Restore Toolbox saying the problem is fixed.
from website: http://www.dwg.restoretools.com/

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How to view damaged dwg file of autocad?


Try using a different version of AutoCAD to open the drawing, such as AutoCAD 2013 vs. AutoCAD 2015 or plain AutoCAD vs. AutoCAD Architecture, etc. Try different computers if available. or try DWG Viewer Tool on website:http://www.ask.com/answers/722146801/how-to-view-corrupted-autocad-drawing?qsrc=14106

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AutoCAD RECOVER command?
If doesn't help, try it:
DWG Repair Kit
This professional AutoCAD DWG repair tool features a uniquely efficient data analysis core and an interface that both professionals and novices with appreciate. The program will show you how to repair DWG files online in seconds even if you have never worked with data recovery tools of any sort!
For more information: http://www.dwg.repair/

Also look here: https://social.technet.microsoft.com/Forums/en-US/fb2d8693-9551-43b7-9310-584471d60a56/autocad-files-corrupted?forum=w7itproappcompat

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How to recover AutoCAD files from flesh card?


Hi,
If you need to recover it as fast as it possible install Recovery Toolbox for DWG , this thing is able to help you. But it's not free. Download free demo here:

http://www.dwg.recoverytoolbox.com/
As one of solutions I can advise you to try to open your files in MS Visio, Compass or using another program which could open dwg file. Or try to recover them using AutoCAD recovery function.
Also you can read here about dwg file corruption:

http://www.filerepairforum.com/forum/cad-tools/cad-tools-aa/dwg/561-how-to-recover-autocad-files-from-flesh-card

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You may recover .dwg file with dwg corrupt file repair
Material http://www.autocad.repairtoolboxx.com could be interesting for autocad files

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In the past the fastest way to fix this is to go directly to the file and try to open it. It is possible that file or database has been corrupted. In some instances the file type dwg is not associated with autocad and the application hangs because it is looking for .dwg as an associated file type to autocad.

Let me know if you need further clarification.
Good luck!

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3 Answers

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Try rebooting your computer, then relaunch AutoCAD. If your .dwg file will not open then open the backup file. Sometimes the .dwg file goes crazy and the backup file will save your life, most of the time. Also make sure that your machine has enough memory to run AutoCAD. Memory is either your best friend or your worst enemy when working with AutoCAD. I hope this helps.

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Thanks for your response.

To fix the problem I redrew the componenet and deleted the offending file. I found that I could open the file with AutoCad LT but not AutoCad 2009 Mechanical.

Best regards
Trebleblank

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