error synchronization

occur error for deployed my organization

when i make a organization and username at bonita 7.7.2 or 7.7.5 32bit or 64bit (windows 8.1) i cant deploy it because occur error for synchronization.
error reason is
An error occured during synchronization
org.bonitasoft.studio.actors.operation.PublishOrganizationOperation.run(PublishOrganizationOperation.java:103)
org.bonitasoft.studio.actors.ui.handler.InstallOrganizationHandler.execute(InstallOrganizationHandler.java:76)
org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:291)

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