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Build: NetBeans IDE Dev (Build 201109080600) VM: Java HotSpot(TM) Client VM, 20.2-b06, Java(TM) SE Runtime Environment, 1.6.0_27-b07 OS: Linux User Comments: jungmat: create a test query in HQL Query window Stacktrace: java.lang.ClassNotFoundException: com.mchange.v2.c3p0.DataSources at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Created attachment 110574 [details] stacktrace
Log shows modules from different versions. Probably the hibernate module could improve its versioning a bit to prevent this in future.
*** This bug has been marked as a duplicate of bug 194198 ***