During the install process of Remote Execution Agent, the process stopped asking:
"/opt/qatest_ins/WA_Agent_R11_3_DES_raw_SI/jars/ext/sinetfactory.jar exists. Override(Y/N/A)?"
You need to answer 'Y' and let the installer put this updated jar file in place.
If you did not overwrite one you should expect following error upon the Agent starting up:
shown in the defaultlog_agent.log file.
If the error had appeared you need to re-install the plug-in.