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[protege-discussion] Problem during deployment of Protege Plugin

Götz Fabian goetz.fabian at
Fri Dec 10 07:06:19 PST 2010

Hello everyone,

I'm experiencing some trouble during deployment of a Protege plugin. Building and running it (using the Ant script) works flawlessly in Eclipse. However, when I copy the resulting jar file into the plugins folder of Protege and launch it, the following exception is thrown twice: Requested factory com.ctc.wstx.stax.WstxInputFactory cannot be located.  Classloader =sun.misc.Launcher$AppClassLoader at 546b97fd
	at Method)
	at org.apache.axis2.util.XMLUtils.toOM(
	at org.apache.axis2.util.XMLUtils.toOM(
	at org.apache.axis2.deployment.DescriptionBuilder.buildOM(
	at org.apache.axis2.deployment.AxisConfigBuilder.populateConfig(
	at org.apache.axis2.deployment.DeploymentEngine.populateAxisConfiguration(
	at org.apache.axis2.deployment.FileSystemConfigurator.getAxisConfiguration(
	at org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContext(
	at org.apache.axis2.context.ConfigurationContextFactory.createConfigurationContextFromFileSystem(
	at org.apache.axis2.client.ServiceClient.configureServiceClient(
	at org.apache.axis2.client.ServiceClient.<init>(

com.ctc.wstx.stax.WstxInputFactory is included in a supplied jar, which you can also find here:
Other classes are successfully loaded from this jar file, with the exception of WstxInputFactory.

Has anyone experienced a similar problem? Is there some magic in the class/bundle loading of Protege?

Thank you for any kind of help or advice!

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