Symptoms:
When trying to start appspace or appnode, it fails with the following error found in appnode.log .
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2017-03-02 18:17:03.140 INFO  [main] com.tibco.thor.frwk - bwappnode TIBCO ActiveMatrix BusinessWorks version 6.3.5, build V17, 2017-02-02 initialized using logging config /Applications/TIBCO/BW635/bw/6.3/domains/TSFIDomain/appnodes/TSFIAppSpace/TSFIAppNode/logback.xml
2017-03-02 18:17:03.207 INFO  [AppNodeStateNotificationThread] com.tibco.thor.frwk - AppNodeStateNotificationThread started
2017-03-02 18:17:06.757 ERROR [main] com.tibco.thor.frwk - TIBCO-THOR-FRWK-CMN-500001: Failed to install bundle from [/Applications/TIBCO/BW635/bw/6.3/system/shared/com.tibco.ftl_5.0.0.009]
java.lang.Exception: Found a duplicate bundle within the same folder file:/Applications/TIBCO/BW635/bw/6.3/.ftl_5.0.0system/shared/com.tibco.009/
      at com.tibco.bw.thor.management.common.BW6RepoUtil.installFromFolder(BW6RepoUtil.java:505) [com.tibco.bw.thor.management.common_1.4.500.008.jar:na]
      at com.tibco.bw.thor.management.common.BW6RepoUtil.installFromFolder(BW6RepoUtil.java:357) [com.tibco.bw.thor.management.common_1.4.500.008.jar:na]
      at com.tibco.bw.thor.admin.node.commands.StartCommand.installFromSystem(StartCommand.java:1822) [com.tibco.bw.thor.admin.node_1.4.500.012.jar:na]
      at com.tibco.bw.thor.admin.node.commands.StartCommand.install(StartCommand.java:1352) [com.tibco.bw.thor.admin.node_1.4.500.012.jar:na]
      at com.tibco.bw.thor.admin.node.commands.StartCommand.installProduct(StartCommand.java:1392) [com.tibco.bw.thor.admin.node_1.4.500.012.jar:na]
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Cause:
A duplicate bundle is present in the reported directory which causes a conflict between JARs. If there are multiple versions of FTL installed in the same TIBCO_HOME directory where BW is installed, such issues occur.