creating cred_v2 directly into d:\sapcryptolib directory , while the doc is suggest it will created in d:\sapcryptolib\sec
are you talking about cred_V2 file? it would be created under d:\sapcryptolib.. but that should not be an issue.
in the host name, did you try with ECC system host name (e.g. SAP-DC-CRM) instead of giving ip address?
Cross check user name and password are authenticated to that system