# Ruby 1.9.1 on Windows - missing DLLs in gem installer

**URL:** <https://www.ruby-forum.com/t/ruby-1-9-1-on-windows-missing-dlls-in-gem-installer/161871>\
**Category:** Ruby\
**Created:** [March 3, 2009, 9:32am UTC](https://www.ruby-forum.com/t/ruby-1-9-1-on-windows-missing-dlls-in-gem-installer/161871 "2009-03-03T09:32:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ogeidix](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/d07c76/32.png) [@ogeidix](https://www.ruby-forum.com/u/ogeidix)\
**Post date:** [March 3, 2009, 9:32am UTC](https://www.ruby-forum.com/t/ruby-1-9-1-on-windows-missing-dlls-in-gem-installer/161871/1 "2009-03-03T09:32:45Z")

</div>

Hi friends,

I downloaded the Ruby-1.9.1-p0 Binary for Windows. After unpacking the  
zipped file, it runs fine, BUT when I try to issue the following gem  
install command:

gem install sqlite3-ruby --include-dependencies

it starts complaining that a lot of DLLs are missing; among them I  
listed the following:

datasvcs.dll, icudt24l.dll, icuin24.dll, icuio24.dll, icuuc24.dll,  
libeay32.dll, libmex.dll, libmwservices.dll, libmx.dll, libut.dll,  
libz.dll, mpath.dll, msvcrt-ruby191.dll, mvalue.dll, m\_dispatcher.dll,  
nscrt.dll, readline.dll, ssleay32.dll, xerces-c\_2\_1\_0.dll, zlib.dll.

The questions are:  
(Q1)- what are these files?  
(Q2)- why it is asking for them?  
(Q3)- Where can I get them? (preferably, in one pack)

After downloading these files, one by one, from [dlldll.com](http://dlldll.com) (?), an error  
message saying:

“ruby.exe - Entry Point Not Found - The procedure entry point  
rl\_vi\_editing\_mode could not be located in the dynamic link library  
readline.dll”

I presume this message occurs if the DLL versions do not match, which  
leads to (Q3).

Any insight would be helpful. Thanks,  
DiegoG

---

<div class="post-metadata">

**Author:** ![ogeidix](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/o/d07c76/32.png) [@ogeidix](https://www.ruby-forum.com/u/ogeidix)\
**Post date:** [March 4, 2009, 2:45pm UTC](https://www.ruby-forum.com/t/ruby-1-9-1-on-windows-missing-dlls-in-gem-installer/161871/2 "2009-03-04T14:45:45Z")

</div>

On Mar 3, 3:31 am, Diego G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> Hi friends,
> 
> I downloaded the Ruby-1.9.1-p0 Binary for Windows. After unpacking the  
> zipped file, it runs fine, BUT when I try to issue the following gem  
> install command:

If you download garbagecollect releases (the one advertised in Ruby  
page), then you need follow these instructions:

[http://www.garbagecollect.jp/ruby/mswin32/en/documents/install.html](http://www.garbagecollect.jp/ruby/mswin32/en/documents/install.html)