i am using hibernate 3.0
and i keep receiving the error message

Exception in thread "AWT-EventQueue-0" java.lang.NoSuchMethodError: org.apache.log4j.spi.LoggingEvent.getThrowableStrRep()[Ljava/lang/String;
at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:304)
at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:221)
at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:56)
at org.apache.log4j.Category.callAppenders(Category.java:258)

I deleted some files from my application and i must have accidently deleted something i needed. Log4j was one of the files i deleted so i downloaded 2 versions and tried them both no luck, however i received a different error with the new one i think it's 3.1 right now i am using
log4j-1.2.11.jar.

Does anyone know what file or versions i need to use with hibernate?

AFAIK log4j-1.2.13.jar works for sure. The class missing seems to be called internally by log4j so you'd think that any version of log4j would be consistent in its internal implementation.

the problem was not log4j itself but further in my code i had another file log4j-core.jar, turned out i had two jar files i should have been looking for this.