# How to solve xmlsimple.rb warning: already initialized const

**URL:** <https://www.ruby-forum.com/t/how-to-solve-xmlsimple-rb-warning-already-initialized-const/160216>\
**Category:** Ruby\
**Created:** [February 13, 2009, 4:00am UTC](https://www.ruby-forum.com/t/how-to-solve-xmlsimple-rb-warning-already-initialized-const/160216 "2009-02-13T04:00:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![johnroyworld](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/bcef8e/32.png) [@johnroyworld](https://www.ruby-forum.com/u/johnroyworld)\
**Post date:** [February 13, 2009, 4:00am UTC](https://www.ruby-forum.com/t/how-to-solve-xmlsimple-rb-warning-already-initialized-const/160216/1 "2009-02-13T04:00:58Z")

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hi all,

I am new to ruby on rails with ubuntu server and i got this warning  
below in every time i run my script. Any advice would be appreciated.  
Thanks!

/usr/lib/ruby/1.8/xmlsimple.rb:275: warning: already initialized  
constant KNOWN\_OPTIONS  
/usr/lib/ruby/1.8/xmlsimple.rb:280: warning: already initialized  
constant DEF\_KEY\_ATTRIBUTES  
/usr/lib/ruby/1.8/xmlsimple.rb:281: warning: already initialized  
constant DEF\_ROOT\_NAME  
/usr/lib/ruby/1.8/xmlsimple.rb:282: warning: already initialized  
constant DEF\_CONTENT\_KEY  
/usr/lib/ruby/1.8/xmlsimple.rb:283: warning: already initialized  
constant DEF\_XML\_DECLARATION  
/usr/lib/ruby/1.8/xmlsimple.rb:284: warning: already initialized  
constant DEF\_ANONYMOUS\_TAG  
/usr/lib/ruby/1.8/xmlsimple.rb:285: warning: already initialized  
constant DEF\_FORCE\_ARRAY  
/usr/lib/ruby/1.8/xmlsimple.rb:286: warning: already initialized  
constant DEF\_INDENTATION  
/usr/lib/ruby/1.8/xmlsimple.rb:287: warning: already initialized  
constant DEF\_KEY\_TO\_SYMBOL

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<div class="post-metadata">

**Author:** ![johnroyworld](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/bcef8e/32.png) [@johnroyworld](https://www.ruby-forum.com/u/johnroyworld)\
**Post date:** [February 13, 2009, 5:37am UTC](https://www.ruby-forum.com/t/how-to-solve-xmlsimple-rb-warning-already-initialized-const/160216/2 "2009-02-13T05:37:34Z")

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up up up… i need help here

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<div class="post-metadata">

**Author:** ![johnroyworld](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/bcef8e/32.png) [@johnroyworld](https://www.ruby-forum.com/u/johnroyworld)\
**Post date:** [February 13, 2009, 5:54am UTC](https://www.ruby-forum.com/t/how-to-solve-xmlsimple-rb-warning-already-initialized-const/160216/3 "2009-02-13T05:54:35Z")

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On Fri, 2009-02-13 at 11:59 +0900, Johnroy W. wrote:

> hi all,
> 
> I am new to ruby on rails with ubuntu server and i got this warning  
> below in every time i run my script. Any advice would be appreciated.  
> Thanks!

Seeing your script would help. However, it looks as though you’re  
loading the same file multiple times (or the aggregate of your includes  
are).

Also, have patience. Sometimes it takes a while.

Have you tried google? I searched for already initialized constant and  
came up with the following, which seems to be talking about your exact  
problem:

[http://www.unwin.org/ruby\_on\_rails/tips/xml\_simple\_already\_initialized\_constant\_warnings.html](http://www.unwin.org/ruby_on_rails/tips/xml_simple_already_initialized_constant_warnings.html)

Good Luck,  
Matt