I'm trying to use Apache Fop, but I get following exception:
org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
The strange thing about this error is: Everything worked fine already. We have another Track with different DC's on the server, where we have a sandbox for testing some code. In this sandbox I also created the librarys and DC's for Apache FOP. After this I got the Error above for the otther DC.
I have already deleted everything in the sandbox and the error still occurs.
Any ideas to solve this problem?