G'day,
Thanks Johannes, the problem turned out to be similar to one you alluded to in an earlier response to one of my queries:
https://list.nih.gov/cgi-bin/wa.exe?A2=IMAGEJ;b8af747d.1303Exif_Reader.jar is installed in one of ImageJ's plugins sub-folders. Exif_Reader.jar includes classes from an earlier version of metadata-extractor. Removing Exif_Reader.jar fixes the problem.
I guess Exif_Reader is part of the standard Windows ImageJ installation, whereas it's not included in the Ubuntu installation, which would explain why my plug-in worked on Ubuntu but not Vista.
Since my users rely on Exif_Reader I can't simply ask them to remove it, so it looks like I'll have to rewrite my filter to use the version of metadata-extractor packaged in Exif_Reader. The situation advised against previously :(
Other than rewriting ImageJ to use OSGi/Jigsaw I guess there's no way around this "classpath hell".
Thanks,
Chris.
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