JCO Error when running applicaitons from the WebDynpro admin

Hi...

I am getting this error when running my custom apps from the J2EE admin. They run fine from the portal. SAP apps display a login page. Why do my apps display this message?

Could not create JCOClientConnection for logical System: AEWD_MODELDATA_DEST - Model: class com.aei.inboxpoc.model.inboxview.RH_INBOX_VIEW_CREATE. Please assure that you have configured the RFC connections and/or logical System Name properly for this model!