Public bug reported:

Binary package hint: fop

On Ubuntu Lucid, when running apache fop, the metadata for PNG images
can't be read:

18 août 2010 19:57:06 org.apache.fop.fo.flow.ExternalGraphic bind
GRAVE: Image not available: I/O error while extracting image metadata: Error 
reading PNG metadata
...
GRAVE: Image not found: images/someimage.png

Expected: these error messages should not appear and the resulting PDF
file should be created correctly.

When I replace openjdk with sun-jdk, the problem disappears (no error
messages, PDF file created fine). So there is both a workaround to this
problem, and an indication where the problem lies (in openjdk).

Here are the packages I installed to solve the problem:

Installed packages:
lucid/partner sun-java6-jre 6.20dlj-1ubuntu3 [6 410kB]
lucid/main odbcinst 2.2.11-21 [35,5kB]
lucid/main odbcinst1debian1 2.2.11-21 [66,6kB]
lucid/main unixodbc 2.2.11-21 [209kB]
lucid/main gsfonts-x11 0.21 [10,5kB]
lucid/partner sun-java6-bin 6.20dlj-1ubuntu3 [27,7MB]      
lucid/partner sun-java6-jdk 6.20dlj-1ubuntu3 [20,9MB]      

Here are the packages I removed to solve the problem:

default-jre-headless*
icedtea-6
jre-cacao*
openjdk-6-jre*
openjdk-6-jre-headless*
openjdk-6-jre-lib*

I hope that helps.

** Affects: fop (Ubuntu)
     Importance: Undecided
         Status: New

-- 
fop:  I/O error while extracting image metadata
https://bugs.launchpad.net/bugs/620037
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