ECC6.0 Clariion StorageGroup : "can't get HLUs from ClariionSdmService"

Hi gurus.

Since I modify emc user's password on a CX3, I can't use ECC anymore to manage it.

I already stop all Clariion Storage Agent, delete everything in relation with that CX in "Discover->Review Progress->Discover Type : Clariion" then, I rediscover CX.
Everythings look good.

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PERSISTED_INFO: * stored * [1686670] MO Type = Clariion
ArrayType=FC4700/CX600/CX400 | Password=****** | SPA=mileva-sp1.xxx.xxx | SPB=mileva-sp2.xxx.xxx | SecurityPorts=80/443 | UserName=emc
objects managed = 1 agents managing = 2
objects originally found = 1

** can be deleted only if every associated agent is inactive **

Object 1 [Clariion=CKxxxxxxx] has management status NORMAL.
The following agents have permission to manage the object:
CLARiiON Agent @ sun38.xxxx [reported at 2009-01-28 15:08:24.0]
CLARiiON Agent @ sun33.xxxx [reported at 2009-01-29 14:33:35.0]
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When I try to modify a storagegroup, a new window's open :
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SDM Client Error
can't get HLUs from ClariionSdmService
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I click on "Ok", then add LUNs to stroragegroup, then execute it. But action fails with message : "Agent transaction returned empty"

Any clue ?

Clariion Storage Agent 6.0.0.0.538