Hi Brian, On Wed, 9 Apr 2014, Brian Northan wrote:
> I just updated to pom-scijava-1.55 I hope you mean pom-scijava 1.155, not 1.55. > and am having trouble running a jython script (was working fine until I > updated, I hadn't updated in a few weeks so I don't know exactly when it > broke). > > when I call "os.path.exists" I get... > > "java.lang.IncompatibleClassChangeError: Found class > com.kenai.jffi.InvocationBuffer, but interface was expected" It is one of those problems caused by other software maintainers being overly happy to include soon-to-be-outdated dependencies in their .jar files. In particular, when I run $ ./bin/find-jar-for-class.bsh com.kenai.jffi.InvocationBuffer Class com.kenai.jffi.InvocationBuffer is in .../jruby-complete-1.7.11.jar Class com.kenai.jffi.InvocationBuffer is in .../jython-2.5.2.jar Class com.kenai.jffi.InvocationBuffer is in .../jruby-1.6.7.2.jar I see that the class/interface is in the two biggest offenders: JRuby and Jython. Most likely, one of them has an obsolete version of jffi bundled, and another one accesses that obsolete version by mistake. If you have jruby 1.6.7.2, try to delete that .jar (it is a game of luck which of your .jar files appears in the class path first, so I would strongly suggest to delete it rather than renaming it). Ciao, Johannes _______________________________________________ ImageJ-devel mailing list ImageJ-devel@imagej.net http://imagej.net/mailman/listinfo/imagej-devel
