AutoCAD crashes with Fatal Error using WBLOCK

AutoCAD crashes with Fatal Error using WBLOCK

adam.bielecki
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Message 1 of 19

AutoCAD crashes with Fatal Error using WBLOCK

adam.bielecki
Enthusiast
Enthusiast

Hello,

Every time my collegue is trying to save a block (command WBLOCK) AutoCAD crashes with Fatal error. The problem is connected always with one specified drawing which is very needed. PURGE and AUDIT didn't help.

 

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Accepted solutions (2)
2,957 Views
18 Replies
Replies (18)
Message 2 of 19

ennujozlagam
Mentor
Mentor

have you try to install latest updates form autodesk and see if helps. thanks





Remember : without the difficult times in your LIFE, you wouldn't be who you are today. Be grateful for the good and the bad. ANGER doesn't solve anything. It builds nothing, but it can destroy everything...
Please mark this response as "Accept as Solution" if it answers your question. Kudos gladly accepted.
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Message 3 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

...additional to looking for updates:

 

>> The problem is connected always with one specified drawing

If command _AUDIT does not work you might try to

  • create a new dwg-file
  • open that defect one
  • use copy & paste to "transfer" the geometry from the modelspace to the new drawing.

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 4 of 19

jayhar
Advisor
Advisor

Hi @adam.bielecki

 

Reset Settings to Default

 

Thanks

Jayhar

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Message 5 of 19

adam.bielecki
Enthusiast
Enthusiast

Thanks a lot. For now none of you advices works. Maybe I should have added that the size of the file is... 345 MB. Possible at all to work on such big drawing?

My colleague claims that problem started exist when he copied some elements exported from Creo. So maybe that is the reason?

 

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Message 6 of 19

adam.bielecki
Enthusiast
Enthusiast

Guys, if I sent you this file are you maybe check what can be wrong?

https://autode.sk/2Ioi4Bl

 

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Message 7 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

can you please upload that as zip file or attach it to the reply, otherwise the Autodesk Viewer tries to open it, and before it got visible there is no chance to download it.

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 8 of 19

adam.bielecki
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Enthusiast

Zip file in A360 because putting it as attachment doesn't work (max 75 MB is allowed)

https://autode.sk/2IoOWKg

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Message 9 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

File received 😉

 

Which product and version is in use?

Can you please start AutoCAD, start command _ABOUT and show us a screenshot from that dialog?

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 10 of 19

adam.bielecki
Enthusiast
Enthusiast

Product Version: N.402.0.0 AutoCAD 2017.1.2 Update

 

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Message 11 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

>> Product Version: N.402.0.0 AutoCAD 2017.1.2 Update

Vanilla AutoCAD or AutoCAD MEP or so (because MEP objects enabler were loaded)?

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 12 of 19

adam.bielecki
Enthusiast
Enthusiast

It is not AutoCAD MEP, I am not even aware of this MEP objects enabler...

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Message 13 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

looking to the objects inside the dwg-file you'll see types not available with plain (Vanilla) AutoCAD, like "AEC_WALL":

 

20190618_105205_0001.png

 

And that can be one source of your issue! _WBLOCK means it has to create a new drawing and within that drawing it has to create the same objects, as AutoCAD itself does not know how to create an "AEC_WALL" it's limited to do that.

 

You might try to run command -EXPORTTOAUTOCAD (instead of _WBLOCK) as this command explodes the AEC-objects to AutoCAD block-references, maybe that helps to get it working.

 

BTW: When you say that WBLOCK is crashing AutoCAD, which options in the WBLOCK dialog did you use? (select objects or entire drawing)?

 

With that size of drawing I would have split it to separate dwg-files and use XRef technology to get a combined view. Opening 350MB files is not what AutoCAD "likes" 😉

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 14 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

want to add ...

AutoCAD 2020, after detaching the referenced raster file, running command _-AUDIT to clean the RegApps:

  • command _WBLOCK works file with some selected objects
  • command _WBLOCK with "entire drawing" forces AutoCAD to use more memory than (at least I have) available.
  • 20190618_111514_0001.png

 

How much memory have you in your system, mine has 32GB and I had to stop AutoCAD before running totally out of memory.

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 15 of 19

adam.bielecki
Enthusiast
Enthusiast

@Alfred.NESWADBAmany thanks but after using -EXPORTTOAUTOCAD I got a DWG file and cannto open it - monit that invalid file.

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Message 16 of 19

Alfred.NESWADBA
Consultant
Consultant

Hi,

 

my next step would then be to use command _WBLOCK to split your current drawing into either logical or geographical separated drawings.

 

So you don't need to _WBLOCK all objects, begin with the smallest group, export them to a new dwg-file, check the new dwg-file if it's working well, then delete these items from your big dwg, run command _PURGE to free hidden geometry. And that part-by-part.

It might help to close AutoCAD and reopen it, as this makes your memory clean and so proceed faster with the next AutoCAD session.

 

- alfred -

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 17 of 19

adam.bielecki
Enthusiast
Enthusiast

@Alfred.NESWADBA  unfortunately _WBLOCK doesn't work even if I select one simply line

2019-06-19_10h20_15.png

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Message 18 of 19

Alfred.NESWADBA
Consultant
Consultant
Accepted solution

Hi,

 

for me that worked, but could be that my config (and installed verticals) help to get that done.

If WBLOCK crashes you might run the other way:

  • open the original drawing
  • erase all but a specific area (or logical set of geometry)
  • run command _PURGE
  • save that drawing as a new file, to be used later as XRef
  • (repeat these steps until all parts are available as separated dwg-files)

 

- alfred -

 

------------------------------------------------------------------------------------
Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ... blog.ish-solutions.at ... LinkedIn ... CDay 2026
------------------------------------------------------------------------------------

(not an Autodesk consultant)
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Message 19 of 19

jayhar
Advisor
Advisor
Accepted solution

Hi @adam.bielecki 

 

Same Issue Of Me, When I Wblock Autocad Crashes With Fatal Error And Error Message Like This

 

Command EXPORTTOAUTOCAD Helps To Fix.

 

 

Capture.JPG

 

 

 

 

 

Thanks

Jayhar

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