can you confirm what are the interfaces you have configured for import meta data?
make sure you have created interfaces for below services.
login
SFSFSessionHandlingLoginQueryResult_Out
SFSFSessionHandlingLoginQueryResult_In
logout
SFSFSessionHandlingLogoutQueryResult_Out
SFSFSessionHandlingLogoutQueryResult_In
entity list
SFSFAPIDictionaryListSFObjectsResult_Out
SFSFAPIDictionaryListSFObjectsResult_In
definition
SFSFAPIDictionaryDescribeSFObjectsExResult_Out
SFSFAPIDictionaryDescribeSFObjectsExResult_In