title: Paperclip error: "no decode delegate for this image format"
body: <p>I use Windows 7 and I installed ImageMagic. I can run Identify command from console without a problem.</p>
  
  <p>But when I use my Rails application (run from Aptana RadRails IDE), it gives me an error: </p>
  
  <pre><code>Magick: no decode delegate for this image format `/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]'' @ error/constitute.c/ReadImage/532.
  Magick: no decode delegate for this image format `/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]'' @ error/constitute.c/ReadImage/532.
  
  
  [paperclip] c:/ImageMagick-6.6.3-Q16/identify -format %wx%h  'C:/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]'
  [paperclip] An error was received while processing: #&lt;Paperclip::NotIdentifiedByImageMagickError::/Users/karl/AppData/Local/Temp/stream,5000,1.jpg is not recognized by the 'identify' command.&gt;
  [paperclip] c:/ImageMagick-6.6.3-Q16/identify -format %wx%h  'C:/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]'
  [paperclip] An error was received while processing: #&lt;Paperclip::NotIdentifiedByImageMagickError: C:/Users/karl/AppData/Local/Temp/stream,5000,1.jpg is not recognized by the 'identify' command.&gt;
  </code></pre>
  
  <p>If I try to run the same command from console, it works OK (Under any user). (NOTE: I did not add the quotes)</p>
  
  <pre><code>C:\Users\karl&gt;c:/ImageMagick-6.6.3-Q16/identify -format %wx%h C:/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]
  600x450
  </code></pre>
  
  <p>One interesting thing is that if I run the command manually with quotes ('), then I get the same error.</p>
  
  <pre><code>C:\Users\karl&gt;c:/ImageMagick-6.6.3-Q16/identify -format %wx%h 'C:/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]'
  Magick: no decode delegate for this image format `/Users/karl/AppData/Local/Temp/stream,5000,1.jpg[0]'' @ error/constitute.c/ReadImage/532.
  </code></pre>
  
  <p>I tried to modify Paperclip to work in a way that it would not add quotes, but it did not seem to make any difference or I just did something wrong.</p>