You can download this HotFix from TIBCO Support Portal (https://support.tibco.com). You will need to provide your TIBCO Support Portal credentials. Once logged in you can the download the hotfix by selecting the “Downloads” -> “Hotfixes” option. Then go to the AvailableDownloads/BusinessWorks/6.6.1/hotfix-02.

================================================================================
Closed Issues in 6.6.1_HF-002 (This Release)    

AMBW-40600
After migration, multiple errors occurred for DTD to XSD conversion.

AMBW-37772
Support is added for PostgreSQL failover URL.
For example:
jdbc:postgresql://host1:port1,host2:port2/database.

AMBW-37750
The coercion failed to fetch the correct elements for mapping and displayed validation error
at design time when there were two elements of the same name and namespaces, but from
the different schemas.

AMBW-35348
The SSL was configured even when the SSL Client shared resource picker was not empty
and the module property against the Confidentiality field at HTTP Client shared resource
was set to false.
Set the bw.plugin.http.client.relyOnConfidentialityField property to true.    
================================================================================