loadrunner Can anyone please help me on GWT DFE.I have...

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Sujatha RT

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Can anyone please help me on GWT DFE.I have specified the *.gwt.rpc files,*.jar files and *.class files under Record > Recording Options > Data Format Extension > Chain Configuration and enabled "Enable data format extension" check box.When i do the recording after this settings i have got with an error in generation "GWT DFE error: Exception in jvm - java.lang.NullPointerException" and after that the firefox is hanged without any further events capture. Is LR version compatible with firefox version?? Im using LR 11.04 and Mozilla firefox 36.0 on windows machine. Any suggestions?
 
what is the JVM version in %LR_PATH%\jre? what GWT version is the AUT? did you try with a newer version of LR?
 
Avishai Moshka GWT 2.5 version.i have tried with 12.01 LR version also , and gotta an error message " Decoded message is null" .