# Large empty file

**URL:** <https://discourse.mcneel.com/t/large-empty-file/37774>\
**Category:** Rhino for Windows\
**Created:** [October 18, 2016, 12:44pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774 "2016-10-18T12:44:23Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![phillip](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/phillip/32/664214_2.png) [@phillip](https://discourse.mcneel.com/u/phillip)\
**Post date:** [October 18, 2016, 12:44pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/1 "2016-10-18T12:44:23Z")

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From a colleague I received a file which only had some curves in it.  
The file is 12 MB and I do not know why. Just copy & paste all geometry leaves with a couple KB. I checked for materials, hidden objects, block references and used purge, but I can´t find out what´s so big in there. Any Ideas? File attached.  
Best,  
phillip  
[k4-k6-profile.zip](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/0/d/0dc74de09f54aa6cb19ee3dab2cc2984440a3347.zip) (2.2 MB)

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**Author:** ![Helvetosaur](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/helvetosaur/32/635974_2.png) [@Helvetosaur](https://discourse.mcneel.com/u/Helvetosaur)\
**Post date:** [October 18, 2016, 1:12pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/2 "2016-10-18T13:12:56Z")

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Probably some plug-in data stuck in the file - unused render materials, CAM toolpaths…???

-SaveAs and choose SavePlugInData=No… should clear that stuff out. --Mitch

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**Author:** ![phillip](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/phillip/32/664214_2.png) [@phillip](https://discourse.mcneel.com/u/phillip)\
**Post date:** [October 18, 2016, 1:22pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/3 "2016-10-18T13:22:13Z")

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Nope. Still 12MB. Is there some file detail list as there is for objects?

EDIT: Sorry, It did work. The bar just did not update the filesize due to Save as, but it is reduced in the explorer to 23K. Great . Thanks. Still out of interest: _Is there some file detail list as there is for objects?_

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**Author:** ![Helvetosaur](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/helvetosaur/32/635974_2.png) [@Helvetosaur](https://discourse.mcneel.com/u/Helvetosaur)\
**Post date:** [October 18, 2016, 1:24pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/4 "2016-10-18T13:24:56Z")

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> [@phillip](#):
>
> Nope. Still 12MB

Dunno, downloaded the file here and did that, it’s 25kb…

 ![](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/6/f/6fae3467f918d1eefb19718089c42074e8153c90.png)

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<div class="post-metadata">

**Author:** ![Helvetosaur](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/helvetosaur/32/635974_2.png) [@Helvetosaur](https://discourse.mcneel.com/u/Helvetosaur)\
**Post date:** [October 18, 2016, 1:37pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/5 "2016-10-18T13:37:02Z")

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You can run the Audit3dm command on the file, it will give you detailed info. At the end, you see the plug-in data and how much memory it takes up. In this case it seems to be a “mystery plug-in” with no name, just an ID…

```
Model User Data Table:
    user table[0]: (2083 bytes)
      Plug-in id: 06F3218E-F5EC-4f6c-B74C-14583F0ED7BC
    user table[1]: (28736 bytes)
      Plug-in name: Renderer Development Kit
      Plug-in id: 16592D58-4A2F-401d-BF5E-3B87741C1B1B
    user table[2]: (28 bytes)
      Plug-in name: RPC
      Plug-in id: 1F908FF5-4984-45a6-95F0-A81CE979A4D7
    user table[3]: (497 bytes)
      Plug-in name: Rhino Render
      Plug-in id: 5DC0192D-73DC-44f5-9141-8E72542E792D
    user table[4]: (12399013 bytes)
      Plug-in name: V-Ray for Rhino
      Plug-in id: E8CFE179-B60C-411a-8416-62A893334519
    user table[5]: (29493 bytes)
      Plug-in id: 491AC9CC-69C8-4369-AB68-019A44F49DDC
    6 user tables, 12460456 bytes (offset 25078 to 12485534)
  Archive size = 12485554 bytes (end mark size = 12485554)

```

Maybe [this thread](https://discourse.mcneel.com/t/badly-inflating-file-sizes-again-ugh/13005) has more info… --Mitch

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<div class="post-metadata">

**Author:** ![phillip](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/phillip/32/664214_2.png) [@phillip](https://discourse.mcneel.com/u/phillip)\
**Post date:** [October 18, 2016, 1:51pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/6 "2016-10-18T13:51:44Z")

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Nice. I will find out about the mystery. Thanks!

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [October 18, 2016, 3:56pm UTC](https://discourse.mcneel.com/t/large-empty-file/37774/7 "2016-10-18T15:56:05Z")

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Hi Phillip - use `Audit3dmFile` for a detailed look at what is in there.

-Pascal