Hi Tom,
It may be best to contact Support directly to assist you in troubleshooting this issue as it is probably not something that will be easy to work out over a forum.
A couple of things though....
1. Are you on MP2 for 4.3 HA? If not, it is highly recommended to upgrade, especially since MP2 needs to be in place to apply the TechAlert private fix which also needs to be applied to avoid a potential data loss situation. You can review and download the private fix here: http://library.veritas.com/docs/311479
You can check in Add/Remove Programs to see if you see the Veritas Storage Foundation for Windows Maintenance Pack 2 entry to confirm MP2 is applied. To see if the TechAlert fix is applied, you can check the version of \Windows\System32\drivers\vxio.sys. The version installed by the fix is 4.3.2041.359. If you are running anything earlier than that version, you will want to apply this.
2. After applying this, it is necessary to force a full resynch of the data unfortunately. However, this alone may resolve the issue and allow replication to complete successfully. Normally when the secondary RVG shows a red mark on it, it's caused by an issue with the Replicator Log (SRL) on the secondary. To correct this, you can simply disassociate the Replicator Log on the secondary and reassociate it. This is done by expanding the Secondary RVG in Replication Network and selecing the Replicator Log volume and choosing to disassociate it. After that is done, simply click on the actual Secondary RVG and choose to associate the Replicator Log. The following technote describes this in more detail: http://support.veritas.com/docs/302943.
I hope this helps and isn't too late to assist you.
Cheers,
rjhanley