tacmd exportWorkspaces

Hi

When I try to export workspace using the following commands:
tacmd login -s itm
tacmd exportWorkspaces 's itm 't klz knt

I encounter the following error:
Oct 18, 2006 12:47:29 PM com.ibm.tivoli.itm.workspace.cli.WorkspaceImportExportCLI run
SEVERE: Unhandled exception caught
java.lang.NoClassDefFoundError: candle/fw/model/RequestContext
at com.ibm.tivoli.itm.workspace.cli.WorkspaceImportExportCLI.validateTepsUserCredentials(WorkspaceImportExportCLI.java:2688)
at com.ibm.tivoli.itm.workspace.cli.WorkspaceImportExportCLI.run(WorkspaceImportExportCLI.java:454)
at com.ibm.tivoli.itm.workspace.cli.WorkspaceImportExportCLI.main(WorkspaceImportExportCLI.java:211)

Has anybody encounter the above problem?

Alexis