Unable to checkout or update projects with Continuum-1.1-beta-1

Hi

I used Continuum 1.0.3 with Synergy SCM provider(with maven-SCM-api-1.0-beta-4.jar and maven-SCM-provider-synergy-1.0-beta-4.jar in my \ lib)
and all works fine.

I have just installed continuum-1.1-beta-1 (with 1.0 version of maven-SCM-api and maven-SCM-provider-synergy )and it doesn't work : it does not manage to extract the sources

In Continuum.log, I have that

339122 [SocketListener0-0] INFO org.apache.maven.continuum.Continuum:default - Enqueuing 'VignetteOffre' (Build definition id=2).
339169 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Initializing build
339169 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Starting build of VignetteOffre
339435 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Updating working dir
339435 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Performing action check-working-directory
339435 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Performing action checkout-project
339638 [pool-1-thread-1] INFO org.apache.maven.continuum.scm.ContinuumScm:default - Checking out project: 'VignetteOffre', id: '1' to 'I:\DONNEES\DATA\continuum-1.1\working-directory\1'.
348091 [pool-1-thread-1] INFO org.apache.maven.scm.manager.ScmManager:default - A working project already exists [Query expression must be specified.].
354857 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Merging SCM results
354935 [pool-1-thread-1] INFO org.apache.maven.continuum.buildcontroller.BuildController:default - Error updating from SCM, not building

In my build result page in Continuum :

Exception:
Cannot checkout sources.
Exception while executing SCM command.
Commandeline = cmd.exe /X /C '"ccm sync -r -p "Query expression must be specified.""'
STDOUT = Project reference requires name and version optionally followed by instance: 'Query expression must be specified.'

STDERR = Warning: Unable to identify project.