urgent wM call RFC error "Control Framework: Fatal error - GUI cannot be reached"

Dear All,

Currenly, i have interface with SAP using RFC, some of the RFC actually calling BDC program, I got this error when i call that RFC
“Control Framework: Fatal error - GUI cannot be reached”

If that RFC running from SAP GUI is running well, but when calling from webMethods always response that error messag Err code : DC006, “Control Framework: Fatal error - GUI cannot be reached”.

anybody can help give me advise, is it webMethods SAP Adapter problem or SAP problem ?

Thank you very much

Fernand Lesmana