java.lang.NullPointerException: This exception has no message.

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This exception has no message.
java.lang.NullPointerException:
at java.io.Reader.(Reader.java:61)
at java.io.InputStreamReader.(InputStreamReader.java:55)
at com.solarmetric.kodo.meta.JDOMetaDataParser.getDocType(Unknown Source)
at com.solarmetric.modules.tools.compiler.MetaDataParser.parseMetaData(Unknown Source)
at com.solarmetric.kodo.meta.JDOMetaDataParser.parseMetaData(Unknown Source)
at com.solarmetric.modules.tools.compiler.MetaDataParser.parseMetaData(Unknown Source)
at com.solarmetric.modules.tools.compiler.MetaDataParser.parseMetaData(Unknown Source)
at com.solarmetric.kodo.meta.ClassMetaData.newInstance(UnknownSource)
at com.solarmetric.kodo.meta.ClassMetaData.getInstance(UnknownSource)
at com.solarmetric.kodo.enhance.JDOEnhancer.(Unknown Source)
at com.solarmetric.kodo.enhance.JDOEnhancer.enhance(Unknown Source)
at com.solarmetric.kodo.enhance.JDOEnhancer.main(Unknown Source)

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