Migrated to Gatling 2.2.5 - getting java.security.cert.CertificateException: No name matching [idjfbsdjnpdn].elb.amazonaws.com found

I switched to Gatling 2.2.5 - now I get the next error:

I followed these instructions to no avail:
http://gatling.io/docs/current/http/http_protocol/#hostname-resolution