SAP Adapter Question [1]

Hii all,

can anyone help me about sap adapter 6.5. after intallation sap adapter 6.5 (WmSAP), adapter cannot load any error like this :

wm.sap.Admin:registerRoutingListener WmSAP Adapter: Error on creating new Object: [ART.114.3] Adapter Runtime: Unable to get information about adapter type WmSAP.
wm.sap.Admin:registerAdapter JCO.classInitialize(): Could not load middleware layer ‘com.sap.mw.jco.rfc.MiddlewareRFC’ JCO.nativeInit(): Could not initialize dynamic link library librfc. Found version “640.0.55” but required at least version “640.0.161”.
wm.sap.Admin:registerLocalConnection WmSAP Adapter: Error on creating new Object: [ART.118.5042] Adapter Runtime (Connection): Unable to enable connection resource wm.sap.internal.cs:emptyConnection. [ART.118.5022] Adapter Runtime (Connection): Cannot create connection wm.sap.internal.cs:emptyConnection. Adapter type WmSAP does not exist.
wm.sap.Admin:registerTransactionStore java.lang.NoClassDefFoundError

what can i do…?

Rg,
-Widodo