[Image-SIG] IOError("cannot identify image file")

[Steve McFarlin]

Hello,

I can not seem to figure out why I am getting the cannot identify image file error. The image in question is a PNG. This PNG file can be loaded by PIL on another system. The PIL tests passed when installing. Is there something I there a common place to look too for why the image could not be identified. 

--------------------------------------------------------------------
PIL 1.1.7 SETUP SUMMARY
--------------------------------------------------------------------
version       1.1.7
platform      linux2 2.6.5 (r265:79063, Jul 13 2010, 18:43:16)
              [GCC 4.3.2]
--------------------------------------------------------------------
*** TKINTER support not available
--- JPEG support available
--- ZLIB (PNG/ZIP) support available
--- FREETYPE2 support available
*** LITTLECMS support not available
--------------------------------------------------------------------

--------------------------------------------------------------------
PIL 1.1.7 TEST SUMMARY 
--------------------------------------------------------------------
Python modules loaded from ./PIL
Binary modules loaded from ./PIL
--------------------------------------------------------------------
--- PIL CORE support ok
*** TKINTER support not installed
--- JPEG support ok
--- ZLIB (PNG/ZIP) support ok
--- FREETYPE2 support ok
*** LITTLECMS support not installed
--------------------------------------------------------------------
Running selftest:
--- 57 tests passed.


Thanks,
Steve