Max to Vantage animation greyed out

Forgive me if I’m being dumb. I have only used Vantage for a few projects - but things seem to changed. When selecting ‘Render animation wit Choas Vantage’ in Max the scene loads ok but the render dialogue no longer appears and if #i bring it up the ‘sequence’ is now greyed out. I have tried frame ranges…animated cameras and objects but the sequence is always greyed out. I’m sure it didn’t used to be this way? Max 2024 2.1 update/Vantage 2.5.1. Any ideas? Thanks

Anyone have an idea? I have reinstalled vray (latest) and Vantage - I cant do the job with this issue - it simply will not import a sequence.

Update - I started Vantage in administrator mode and it fixed it…

Vantage is listening for http commands, such as the render sequence command, on port 20702 (20701 is the live link itself). Probably something blocked it.