no such provider 'clearcase'

[Wim Deblauwe]

Any idea why I get this error when I try 'mvn release:prepare'?

[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'release'.
[INFO] ----------------------------------------------------------------------------
[INFO] Building Utils Logging Module
[INFO]    task-segment: [release:prepare] (aggregator-style)
[INFO] ----------------------------------------------------------------------------
[INFO] [release:prepare]
[INFO] Verifying there are no local modifications ...
[INFO] ----------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ----------------------------------------------------------------------------
[INFO] An error is occurred in the status process.

Embedded error: Can't load the scm provider.
No such provider: 'clearcase'.
[INFO] ----------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ----------------------------------------------------------------------------
[INFO] Total time: 3 seconds
[INFO] Finished at: Thu Nov 17 11:45:32 CET 2005
[INFO] Final Memory: 3M/6M
[INFO] ----------------------------------------------------------------------------

I've set this in my pom.xml:

    <scm>
        <connection>scm:clearcase:</connection>
        <developerConnection>scm:clearcase:</developerConnection>
  </scm>

And I've did a 'mvn install' of the maven-scm-provider-clearcase plugin.

regards,

Wim