# Problem with extensions

**URL:** <https://forum.vassalengine.org/t/problem-with-extensions/6150>\
**Category:** Module Support\
**Created:** [July 22, 2013, 9:20pm UTC](https://forum.vassalengine.org/t/problem-with-extensions/6150 "2013-07-22T21:20:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![GERFIXER303](https://forum.vassalengine.org/user_avatar/forum.vassalengine.org/gerfixer303/32/3366_2.png) [@GERFIXER303](https://forum.vassalengine.org/u/GERFIXER303)\
**Post date:** [July 22, 2013, 9:20pm UTC](https://forum.vassalengine.org/t/problem-with-extensions/6150/1 "2013-07-22T21:20:52Z")

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Everytime I add an extension the following message appears:

I see that it has something to do with java but I don’t know how to solve this.  
I hope you can help me

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**Author:** ![uckelman](https://forum.vassalengine.org/user_avatar/forum.vassalengine.org/uckelman/32/10020_2.png) [@uckelman](https://forum.vassalengine.org/u/uckelman)\
**Post date:** [July 22, 2013, 9:28pm UTC](https://forum.vassalengine.org/t/problem-with-extensions/6150/2 "2013-07-22T21:28:04Z")

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Thus spake GERFIXER303:

> Everytime I add an extension the following message appears:
> 
> I see that it has something to do with java but I don’t know how to  
> solve this.  
> I hope you can help me  
> java.io.IOException: Could not create C:\Program  
> Files\VASSAL-3.2.7\Modules\FormulaDe-2.1\_ext at

The likely cause is that your user account doesn’t have permission to  
write to that path.

Don’t store user data amongst your program files. Store user data in  
your home directory. This is what your home directory is for.

–  
J.

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**Author:** ![wxman40](https://forum.vassalengine.org/letter_avatar_proxy/v4/letter/w/4bbf92/32.png) [@wxman40](https://forum.vassalengine.org/u/wxman40)\
**Post date:** [August 20, 2013, 5:53am UTC](https://forum.vassalengine.org/t/problem-with-extensions/6150/3 "2013-08-20T05:53:27Z")

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If VASSAL is stored in Program Files then how can extensions be stored in another directory?

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**Author:** ![uckelman](https://forum.vassalengine.org/user_avatar/forum.vassalengine.org/uckelman/32/10020_2.png) [@uckelman](https://forum.vassalengine.org/u/uckelman)\
**Post date:** [August 20, 2013, 8:21am UTC](https://forum.vassalengine.org/t/problem-with-extensions/6150/4 "2013-08-20T08:21:03Z")

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Thus spake wxman40:

> If VASSAL is stored in Program Files then how can extensions be stored  
> in another directory?

There’s no necessary connection between where module extensions are  
stored and where VASSAL is installed.

–  
J.