Hi all,

We are running dspace 1.8.2/Linux and having some issues with the pdftoppm tool 
when extracting some PDF's thumbnail. 

Some properties of the PDF's:

- Encoding software includes: Adobe PDF Library, Acrobat Distiller,  Acrobat 
PDFWriter.
- Size: varies from 1 to 10 MB.

In the logs (in debug mode) throws this after executing filter-media:

INFO  org.dspace.app.mediafilter.XPDF2Thumbnail @ XPDF2Thumbnail: outPrefix: 
/tmp/prevu1738144616485715914out
ERROR org.dspace.app.mediafilter.XPDF2Thumbnail @ Unable to delete file
ERROR org.dspace.app.mediafilter.XPDF2Thumbnail @ PDF conversion proc failed, 
exit status=1, file=/tmp/DSfilt2694438157933967840.pdf
--
Full Filter Name: org.dspace.app.mediafilter.HTMLFilter
org.dspace.app.mediafilter.HTMLFilter
Full Filter Name: org.dspace.app.mediafilter.WordFilter
org.dspace.app.mediafilter.WordFilter
Full Filter Name: org.dspace.app.mediafilter.JPEGFilter
org.dspace.app.mediafilter.JPEGFilter
Full Filter Name: org.dspace.app.mediafilter.XPDF2Text
org.dspace.app.mediafilter.XPDF2Text
Full Filter Name: org.dspace.app.mediafilter.BrandedPreviewJPEGFilter
org.dspace.app.mediafilter.BrandedPreviewJPEGFilter
Full Filter Name: org.dspace.app.mediafilter.XPDF2Thumbnail
org.dspace.app.mediafilter.XPDF2Thumbnail
Full Filter Name: org.dspace.app.mediafilter.PowerPointFilter
org.dspace.app.mediafilter.PowerPointFilter
FILTERED: bitstream 38802 (item: 1885/8749) and created 
'DevelopmentBulletin-73_2009.pdf.txt'
ERROR filtering, skipping bitstream:

        Item Handle: 1885/8749
        Bundle Name: ORIGINAL
        File Size: 1445348
        Checksum: 1a1b0472e9361c4a4a00d30846f3e211 (MD5)
        Asset Store: 0
javax.imageio.IIOException: Can't read input file!
javax.imageio.IIOException: Can't read input file!
        at javax.imageio.ImageIO.read(ImageIO.java:1275)
        at 
org.dspace.app.mediafilter.XPDF2Thumbnail.getDestinationStream(XPDF2Thumbnail.java:246)
        at 
org.dspace.app.mediafilter.MediaFilterManager.processBitstream(MediaFilterManager.java:746)
        at 
org.dspace.app.mediafilter.MediaFilterManager.filterBitstream(MediaFilterManager.java:561)
        at 
org.dspace.app.mediafilter.MediaFilterManager.filterItem(MediaFilterManager.java:511)
        at 
org.dspace.app.mediafilter.MediaFilterManager.applyFiltersItem(MediaFilterManager.java:479)
        at 
org.dspace.app.mediafilter.MediaFilterManager.main(MediaFilterManager.java:353)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.dspace.app.launcher.ScriptLauncher.main(ScriptLauncher.java:183)
FILTERED: bitstream 38805 (item: 1885/8749) and created '01whole_Grubb.pdf.txt'
FILTERED: bitstream 38805 (item: 1885/8749) and created '01whole_Grubb.pdf.jpg'
Updating search index:

Strangely, even when running the pdftoppm tool  manually I get  "Bogus memory 
allocation size"  error.  My JAVA_OPTS is set to "-Xmx1024M -Xms128M 
-XX:PermSize=192M -XX:MaxPermSize=384M"

Also someone on the mailing list  suggested a solution to change a line in 
XPDF2Thumbnail.java near the line reporting the error . The line was

File outf = new File(outPrefix+"-000001.ppm");
and change to 
File outf = new File(outPrefix+"-001.ppm");

Unfortunately, this has not worked for me. Any help would be appreciated?

Thanks
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