[libvirt] RestrictedVersion Error trying to shutdown an ESX VM

I could swear it worked before: virsh # list Id Name State ---------------------------------- 352 ubuntu904 running 368 rh53 running virsh # shutdown 352 error: Failed to shutdown domain 352 error: internal error HTTP response code 500. VI Fault: ServerFaultCode - fault.RestrictedVersion.summary with LIBVIRT_DEBUG=1: virsh # shutdown 352 10:34:50.665: debug : virDomainLookupByID:1746 : conn=0x626440, id=352 10:34:50.687: debug : virGetDomain:344 : New hash entry 0x7104d0 10:34:50.687: debug : virDomainShutdown:2331 : domain=0x7104d0 error: Failed to shutdown domain 352 10:34:50.722: debug : virDomainFree:1958 : domain=0x7104d0 10:34:50.722: debug : virUnrefDomain:421 : unref domain 0x7104d0 ubuntu904 1 10:34:50.722: debug : virReleaseDomain:375 : release domain 0x7104d0 ubuntu904 10:34:50.722: debug : virReleaseDomain:391 : unref connection 0x626440 2 error: internal error HTTP response code 500. VI Fault: ServerFaultCode - fault.RestrictedVersion.summary