I have imported a .jar into my Eclipse Android project (importing it to the libs folder and adding the jar to the libraries in Java Build Path), but when I attempt to use it, I get a java.lang.VerifyError. The library is Jiwigo 0.13.1.1; a java library for accessing Piwigo image galleries. I know this should work, because there's an open source android project called RegalAndroid that uses it too (though, an older version, and it copied the source instead of properly importing it). The .jar is the only copy of the library on my computer, so I'd be surprised if it was a version clash error. Any ideas?
Here's my error log (shortened because all the rest is normal android stuff):
FATAL EXCEPTION: main
java.lang.VerifyError: fr.mael.jiwigo.transverse.session.SessionManager
at com.terrapages.itemdetailsactivities.FavoritesDetailsActivity.initViews(FavoritesDetailsActivity.java:179)
at com.terrapages.itemdetailsactivities.FavoritesDetailsActivity.onResume(FavoritesDetailsActivity.java:83)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1149)
at android.app.Activity.performResume(Activity.java:3823)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3118)
[...]
And the line it crashes on (with dummy string values that are different in the code):
SessionManager sessionManager = new SessionManager("username", "password", "gallery-url");
This is the first use of the library anywhere in the code.