Steve Haffenden (Inactive) added a comment - 27/Jan/2014 11:23 PM Hi All I'm unable to reproduce this issue in Confluence 5.4.2 using the details supplied in the description of this issue as such I'm going to close this one out as obsolete. Regards Steve Haffenden Confluence Bugmaster Atlassian

Denise Unterwurzacher [Atlassian] (Inactive) added a comment - 27/Jan/2013 2:16 AM Please see linked duplicate issues for more cases where this can occur.

Andrew Lynch (Inactive) added a comment - 28/May/2009 5:25 AM Also, this might be fixed by upgrading to Java 1.6 : http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5098176 (similar but not identical report). I was able to successfully display this image with a thumbnail using Java 1.6.0_07 and Mac OS X 10.5.7. Regards, Andrew Lynch

Andrew Lynch (Inactive) added a comment - 28/May/2009 5:15 AM Hi Christian, The reason this works in JIRA (for 3.13.4) is that they use an older version of our thumbnail generation library, which is able to handle this particular file. It's not necessarily better support, it just so happens to work with the file you provided. Incidentally a thumbnail for this file will not be supported in later versions of JIRA, after they move to a newer version of our library. It might be possible to make our image reading more robust so that it may have files with strange metadata such as the one you have provided are processed correctly. Regards, Andrew Lynch

Christian Vorhauer added a comment - 27/May/2009 6:57 AM - edited Hi Andrew. I did a little search on google regarding "com.sun.imageio.plugins.png.PNGImageReader.parse_iTXt_chunk". It seems this problem is known but I didn't find a proper solution (see http://markmail.org/message/ezle2exc7zsd2xcc ). Maybe Fireworks PNGs doesn't follow the standards. But, as possible solution or just to provide a better image support in confluence I have to point out, that in this jira issue, the image is correctly thumbnailed http://jira.atlassian.com/secure/thumbnail/31722/31722_Bild+1.png .

Andrew Lynch (Inactive) added a comment - 27/May/2009 3:43 AM Hi Christian, When reproducing this, I had the following exceptions in the logs : java.io.EOFException at javax.imageio.stream.ImageInputStreamImpl.readFully(ImageInputStreamImpl.java:330) at java.io.DataInputStream.readUTF(DataInputStream.java:565) at javax.imageio.stream.ImageInputStreamImpl.readUTF(ImageInputStreamImpl.java:309) at com.sun.imageio.plugins.png.PNGImageReader.parse_iTXt_chunk(PNGImageReader.java:443) at com.sun.imageio.plugins.png.PNGImageReader.readMetadata(PNGImageReader.java:647) at com.sun.imageio.plugins.png.PNGImageReader.readImage(PNGImageReader.java:1309) at com.sun.imageio.plugins.png.PNGImageReader.read(PNGImageReader.java:1579) at javax.imageio.ImageIO.read(ImageIO.java:1400) at javax.imageio.ImageIO.read(ImageIO.java:1322) at com.atlassian.core.util.thumbnail.Thumber.getImage(Thumber.java:270) ... followed by 2009-05-27 13:29:08,180 ERROR [http-8080-3] [core.util.thumbnail.Thumber] retrieveOrCreateThumbNail Unable to create thumbnail image for id 753665 -- referer: http: //localhost:8080/conf/display/ds/paul%27s+maw | url: /conf/download/thumbnails/622596/Bild%201.png | userName: admin javax.imageio.IIOException: Error reading PNG metadata at com.sun.imageio.plugins.png.PNGImageReader.readMetadata(PNGImageReader.java:690) at com.sun.imageio.plugins.png.PNGImageReader.readImage(PNGImageReader.java:1309) at com.sun.imageio.plugins.png.PNGImageReader.read(PNGImageReader.java:1579) at javax.imageio.ImageIO.read(ImageIO.java:1400) at javax.imageio.ImageIO.read(ImageIO.java:1322) at com.atlassian.core.util.thumbnail.Thumber.getImage(Thumber.java:270) at com.atlassian.core.util.thumbnail.Thumber.createThumbnail(Thumber.java:230) ... I believe there may be a problem with the image metadata. This leads to the thumbnail not being created, and hence it cannot be displayed.