Index Administration in RWB of XI cann't activate Adapter Engine

Hi Everyone.

We are working TREX 7.0(sp10) & PI7.0(sp10) .

on Index Administration in RWB, successfully Activate Integration Engine <SID> , but Adapter Engine <SID> is Failed

The Error Messages are :

An error occurred: Class: com.sap.aii.rwb.web.trex.CentralTrexException : Message: RemoteException in Method: CentralTrexManager: activateIndex( String ). TrexException: Failed to activate Trex service. Message: Service call exception; nested exception is: java.lang.Exception: Incorrect content-type found 'text/html'; To-String: java.rmi.RemoteException: Service call exception; nested exception is: java.lang.Exception: Incorrect content-type found 'text/html'

Can Anybody help me with that.