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Problem in rapidminer execution

navnav Member Posts: 28 Contributor II
edited November 2018 in Help
Hi, today running rapidminer from my java code in a linux environmet I got this error:
2011-09-30 12:43:16 WARNING: Cannot load operator class: java.lang.NoClassDefFoundError: Could not initialize class com.rapidminer.operator.performance.ForecastingPerformanceEvaluator (OperatorService.parseOperators())
 java.lang.NoClassDefFoundError: Could not initialize class com.rapidminer.operator.performance.ForecastingPerformanceEvaluator
     java.lang.Class.forName0(Native Method)
     java.lang.Class.forName(Class.java:247)
     com.rapidminer.operator.OperatorDescription.<init>(OperatorDescription.java:89)
     com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:282)
     com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:279)
     com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:279)
     com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:279)
     com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:279)
     com.rapidminer.tools.OperatorService.parseOperators(OperatorService.java:255)
     com.rapidminer.tools.OperatorService.registerOperators(OperatorService.java:229)
     com.rapidminer.tools.plugin.Plugin.registerOperators(Plugin.java:464)
     com.rapidminer.tools.plugin.Plugin.registerAllPluginOperators(Plugin.java:670)
     com.rapidminer.tools.OperatorService.init(OperatorService.java:188)
     com.rapidminer.RapidMiner.init(RapidMiner.java:413)
     TCPClustering.Clustering.doClustering(Clustering.java:269)
     TCPClustering.ClusteringMainClass.main(ClusteringMainClass.java:93)
Do you know what is the problem and how can I solve it? thanks

Answers

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    navnav Member Posts: 28 Contributor II
    I answer myself. To solve the problem I removed the hidden directory .RapidMiner5 and then I lunched again RapidMiner, which made again the directory and after that running my java program the problem doesn't appear.
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