"RapidMiner R extension - Some WARNINGs... (SOLVED)"

User: "leiterenato"
New Altair Community Member
Updated by Jocelyn
Hi Guys,

Finally my RapidMiner is working with R extension in MacOSX Lion! (I'll post how I did that later)
Besides that I still get some WARNING messages:

WARNING #1

[Fatal Error] :1:1: Content is not allowed in prolog.
Sep 22, 2011 1:01:20 AM com.rapidminer.operator.r.ROperatorFactory readROperatorFragments
WARNING: Could not read R fragments from 'file:/Users/leiterenato/Desktop/rapidminer/lib/', error: Content is not allowed in prolog.
org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:249)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:124)
at com.rapidminer.io.process.XMLTools.parse(XMLTools.java:175)
at com.rapidminer.operator.r.ROperatorFactory.readROperatorFragments(ROperatorFactory.java:166)
at com.rapidminer.operator.r.ROperatorFactory.<init>(ROperatorFactory.java:129)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:294)
at com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:232)
at com.rapidminer.tools.OperatorService.registerOperators(OperatorService.java:206)
at com.rapidminer.tools.plugin.Plugin.registerOperators(Plugin.java:471)
at com.rapidminer.tools.plugin.Plugin.registerAllPluginOperators(Plugin.java:725)
at com.rapidminer.tools.OperatorService.init(OperatorService.java:167)
at com.rapidminer.RapidMiner.init(RapidMiner.java:465)
at com.rapidminer.gui.RapidMinerGUI.run(RapidMinerGUI.java:221)
at com.rapidminer.gui.RapidMinerGUI.launch(RapidMinerGUI.java:505)
at com.rapidminer.gui.RapidMinerGUI.main(RapidMinerGUI.java:488)


WARNING #2

[Fatal Error] :1:1: Content is not allowed in prolog.
Sep 22, 2011 1:01:20 AM com.rapidminer.operator.r.ROperatorFactory <init>
WARNING: Could not read documentation of user defined R operators from .
java.io.IOException: Malformed XML operator help bundle: org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.rapidminer.tools.documentation.XMLOperatorDocBundle.<init>(XMLOperatorDocBundle.java:119)
at com.rapidminer.operator.r.ROperatorFactory.<init>(ROperatorFactory.java:150)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:294)
at com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:232)
at com.rapidminer.tools.OperatorService.registerOperators(OperatorService.java:206)
at com.rapidminer.tools.plugin.Plugin.registerOperators(Plugin.java:471)
at com.rapidminer.tools.plugin.Plugin.registerAllPluginOperators(Plugin.java:725)
at com.rapidminer.tools.OperatorService.init(OperatorService.java:167)
at com.rapidminer.RapidMiner.init(RapidMiner.java:465)
at com.rapidminer.gui.RapidMinerGUI.run(RapidMinerGUI.java:221)
at com.rapidminer.gui.RapidMinerGUI.launch(RapidMinerGUI.java:505)
at com.rapidminer.gui.RapidMinerGUI.main(RapidMinerGUI.java:488)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:249)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:124)
at com.rapidminer.tools.documentation.XMLOperatorDocBundle.<init>(XMLOperatorDocBundle.java:117)
... 17 more
.....

WARNING #3

ARGUMENT 'LANGUAGE=en' __ignored__

Any idea what these WARNINGs are about?
Should I be worried about that?

I know that #2 is because RapidMiner can't get R documentation. How do I fix that?

Thanks in advance.
Renato Leite

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