NoClassDefFoundErrr in PI 7.31 PROD-System with UDF

Hi Gurus,

I'm facing a weird problem:

This is my environment: PI 7.31;

1. Landscape: Dev --> QA --> PROD

All UDFs are save in the central SWCV: CentralLibrary.

All mappings with UDFs in PROD do not work, but in DEV and QA are OK.

The Error Log in Mapping is here:

javax.ejb.EJBException: nested exception is: java.lang.RuntimeException: java.lang.NoClassDefFoundError: de/xyzcustomer/CentralLibrary/CL_StringConvert

…

at java.lang.ClassLoader.loadClass(ClassLoader.java:308) ... 52 more Caused by: com.sap.aii.ib.core.mapping.execution.ResourceNotFoundException: Unable to find resource de/ xyzcustomer/CentralLibrary/CL_StringConvert in the following software component versions: 26dd6550-707e-11e2-a09d-deb10ad76533, f0c662d0-6f7b-11e2-b498-deb10ad76533 at com.sap.aii.ib.server.mapping.execution.MappingFinderImpl.readClass(MappingFinderImpl.java:81) at com.sap.aii.ibrep.server.mapping.rt.ArchiveClassLoader.findClass(ArchiveClassLoader.java:92)

I’ve tried the following approaches:

• Reimport central Library and Message-Mapping from DEV into PROD
• Full mapping runtime cache refresh in Administration – Mapping Runtime
• Create a local library in the Mapping namespace. It works well in DEV and QA, but in PROD still gets same error.

Could anyone help me?!

Thanks a lot and regards

Christine