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Error starting Tomcat: SEVERE: Error listenerStart

Problem: When starting Tomcat, the Tomcat log contains the following error:

Jun 01, 2016 4:41:08 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart

Explanation: While this may indicate various errors, one possible source of problems is re-using configuration from an older version of DSpace which is incompatible with the new code. Most likely the incompatibility is in [dspace]/config/spring/.

Solution: Move away your customized configuration directory, start again with the fresh configuration corresponding to the DSpace version you're installing or updating to and then make your changes in that configuration.