JarManager fails for rsrc: jars

The following error occurs when using PigSever class, while using registerScript (InputStream). The Eclipse Maven project adds "pig-0.9.2.jar" as a dependency. When runned, if fails to merge pig-0.9.2.jar. The whole trace is:

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Caused by: org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobCreationException: ERROR 2017: Internal error creating job configuration.
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getJob(JobControlCompiler.java:727)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.compile(JobControlCompiler.java:258)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:150)
at org.apache.pig.PigServer.launchPlan(PigServer.java:1314)
at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1299)
at org.apache.pig.PigServer.execute(PigServer.java:1289)
at org.apache.pig.PigServer.access$400(PigServer.java:125)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1591)
... 44 more
Caused by: java.io.FileNotFoundException: rsrc:pig-0.9.2-core.jar (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:137)
at java.io.FileInputStream.<init>(FileInputStream.java:96)
at org.apache.pig.impl.util.JarManager.mergeJar(JarManager.java:176)
at org.apache.pig.impl.util.JarManager.createJar(JarManager.java:118)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getJob(JobControlCompiler.java:412)
###

Pig should not fail for jars on the "rsrc:" path.