With Clearcase 7, the clearcase lock stream fails

[p121292_deskServices_3.2_2] $ cleartool lock stream:
P_DeskServices_V3.2.0_int@\P_ORC
cleartool: Error: Unable to determine VOB for pathname ".".
cleartool: Error: Unable to access "P_DeskServices_V3.2.0_int@\P_ORC": No such
file or directory.
FATAL: ClearCase UCM Makebaseline failed. exit code=1
Failed to lock stream: java.io.IOException: cleartool did not return the
expected exit code. Command line="lock stream:
P_DeskServices_V3.2.0_int@\P_ORC", actual exit code=1
FATAL: null
java.lang.NullPointerException
at hudson.plugins.clearcase.ucm.UcmMakeBaseline.perform(UcmMakeBaseline.java:261)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:319)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:307)
at hudson.model.Build$RunnerImpl.cleanUp(Build.java:131)
at hudson.model.Run.run(Run.java:856)
at hudson.model.Build.run(Build.java:88)
at hudson.model.ResourceController.execute(ResourceController.java:70)
at hudson.model.Executor.run(Executor.java:90)

There must be not space between 'stream:' and 'stream_name'