Common Problems FAQ
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Common Problems
Performance
FAQ
 

Commonly encountered problems and error messages and their solution.

  1. Specification version 1.3 of package javax.servlet, J2EE Specification, version 1.3 is not compatible with Resin Resin-3.0.x. Resin-3.0.x requires version 2.4.
  2. class file has wrong version 48.0, should be 47.0

Specification version 1.3 of package javax.servlet, J2EE Specification, version 1.3 is not compatible with Resin Resin-3.0.x. Resin-3.0.x requires version 2.4.

This error occurs when you have an old or conflicting jar containing the servlet api in your CLASSPATH. The solution is to clean up your classpath .

class file has wrong version 48.0, should be 47.0

This error occurs when you have an old or conflicting jar in your CLASSPATH. The solution is to clean up your classpath .

If it is a Resin jar that is causing the error, you may have jars from a previous installation that are causing the error. This occasionally occurs when people try to copy a new installation over an old one, and due to write permissions etc. some of the older jars are not replaced.

If the cleaning of the CLASSPATH (above) does not work, you may need to completely remove Resin from your system and re-install.

Performance
FAQ
 
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