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AlainODea (9) [Avatar] Offline
After completing Chapter 11 I could not get crosstalk to run.

First it gave me this error about SLF4J:
java.lang.NoClassDefFoundError: Could not initialize class org.slf4j.LoggerFactory

I fixed this first error by adding slf4j-simple-1.5.10.jar to the runtime classpath.

Then I got a second error:
java.lang.NoClassDefFoundError: org/mvel2/MVEL

I fixed this by downloading and adding mvel2-2.0.15.jar to the runtime classpath.

Then I got a third error:
540 [main] INFO org.hibernate.annotations.common.Version - Hibernate Commons Annotations 3.1.0.GA
18-Jan-2010 11:18:33 AM visit
INFO: An exception was caught and reported. Message: java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(
at java.util.Properties.load0(
at java.util.Properties.load(

I looked and realized that was missing. It is not described in the book and is not in the source archive from the Manning website. I had to search through the outdated Warp-based source code on Google Code at to find it.

I am not impressed. This is extremely poor delivery on a crucial aspect of the book.