Virtual Box Problem

Fehler #0:
SoapFault exception: [SOAP-ENV:Client] VirtualBox error: rc=0x80070005 The object functionality is limited (0x80070005) in /usr/share/phpvirtualbox/lib/vboxServiceWrappers.php:2614
Stack trace:
#0 /usr/share/phpvirtualbox/lib/vboxServiceWrappers.php(2614): SoapClient->__soapCall('IMachine_getNam...', Array)
#1 /usr/share/phpvirtualbox/lib/vboxServiceWrappers.php(54): IMachine->getName()
#2 /usr/share/openmediavault/engined/rpc/virtualbox.inc(181): VBox_ManagedObject->__get('name')
#3 [internal function]: OMVRpcServiceVirtualBox->getMachines(Array, Array)
#4 /usr/share/php/openmediavault/rpcservice.inc(125): call_user_func_array(Array, Array)
#5 /usr/share/php/openmediavault/rpc.inc(79): OMVRpcServiceAbstract->callMethod('getMachines', Array, Array)
#6 /usr/sbin/omv-engined(500): OMVRpc::exec('VirtualBox', 'getMachines', Array, Array, 1)
#7 {main}