求助，备份失败

ry715

各位老大，为什么我从VCB备份ESX会出错呢，两个机器之间是用SCSI的共享存储，如果在ESX上执行备份就没有问题，很着急啊，错误日志如下
[2008-04-19 16:02:33.187 'BaseLibs' 2776 warning] [Vmdb_Unset] Unsetting unknown
path: /vmomi/
[2008-04-19 16:02:34.062 'BlockList' 2852 error] Your VirtualCenter or the ESX s
erver hosting the virtual machine you are dealing with needs to be upgraded to w
ork with this version of VCB. (VCB attempted to invoke the method "acquireLeaseE
xt" on a remote object of type "vim.host.DiskManager", but this method is unknow
n to this object type.)
[2008-04-19 16:02:34.062 'vcbMounter' 2852 error] Error: Failed to open the disk
: Unspecified error
[2008-04-19 16:02:34.062 'vcbMounter' 2852 error] An error occurred, cleaning up
...
谁能帮我一下，谢谢

ry715

都没有人知道吗，希望大家帮帮忙啊