Failed upgrade to JTS 5.0.2 in mergeLPAJTS step

Hello,
I am trying to upgrade to JTS andRTC (single application, no lifecycle project) from 5.0.1 to 5.0.2 however I consistently get error in mergeLPAJTS step which stops the upgrade process. According to log there is java.lang.IndexOutOfBoundsException thrown from MigrateLPACommand.java class:
java.lang.IndexOutOfBoundsException
at java.util.Collections$EmptyList.get(Collections.java:92)
at com.ibm.team.lpa.app.migration.MigrateLPACommand.handleFriendsFile(MigrateLPACommand.java:229)
at com.ibm.team.lpa.app.migration.MigrateLPACommand.execute(MigrateLPACommand.java:143)
at com.ibm.team.repotools.command.AbstractCommand.execute(AbstractCommand.java:68)
at com.ibm.team.repotools.rcp.internal.RepositoryToolsApplication.run(RepositoryToolsApplication.java:816)
at com.ibm.team.repotools.rcp.internal.RepositoryToolsApplication.start(RepositoryToolsApplication.java:891)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
at org.eclipse.equinox.launcher.Main.main(Main.java:1384)
This seems to be an application error.
Can I skip this step if our server configuration uses just RTC? According to the documentation not this step must be done when upgrading.
Please help.
Accepted answer

Hi Libor
Please check whether you have the 'admin' application in the Registered application for CLM5.0.1( jts/admin).
For this step 3(mergeLPAJTS), the repotools command that executes has the lpacontextroot parameter as 'admin'.
Example command:
Directory: "C:\IBM\CLM501\server"
Command: repotools-jts.bat -mergeLPAJTS lpaContextRoot=admin jtsContextRoot=jts oldJTSHome="C:\CLM501\server\conf"
You can skip this step if the admin application is not installed/registered.
Let me know if this helps.
Please check whether you have the 'admin' application in the Registered application for CLM5.0.1( jts/admin).
For this step 3(mergeLPAJTS), the repotools command that executes has the lpacontextroot parameter as 'admin'.
Example command:
Directory: "C:\IBM\CLM501\server"
Command: repotools-jts.bat -mergeLPAJTS lpaContextRoot=admin jtsContextRoot=jts oldJTSHome="C:\CLM501\server\conf"
You can skip this step if the admin application is not installed/registered.
Let me know if this helps.