WaveMaker 6.5 and vCO 5.1 - default self signed certs

This is a bit off topic, but I'm curious if anyone out there has successfully connected WaveMaker 6.5.x (web service) to vCO 5.1 (SOAP or REST) when vCO is configured using the default self signed SSL certs (vanilla vCO 5.1 appliance).

I get the following error even after importing the "localhost.localdom" cert from vCO into my Java keystore/restarting WaveMaker:

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Looks like real certs should work or if you signed them from your own CA, but that's not the case with the out-of-the-box vCO appliance.

Related links:

http://mighty-virtualization.blogspot.com/2012/09/wavemaker-handling-ssl-certificates.html?showComment=1351627607456#c2610948026372492253

http://dev.wavemaker.com/forums/?q=node/8424