Thanks for the suggestion, Radar. I tried this but still no joy. The EA is a working version. It is the MT4 that is broken and not reading it correctly. The tip on the /portable switch was useful.

I really want to downgrade to Build 509 or even Build 600 which also allows me to add the EA correctly. Unfortunately I have to go for a fresh install if I am to change VPS. Does anyone happened to have the install file for Build 509 lying around?

@jcl - the link from FXCM to download MT4 is the same whether it is FXCM Australia or FXCM Europe. I assume you used this link, downloaded a fresh vernon to install, confirmed that it was Build 604 and linked Zorro via the bridge(?)

It looks like there are some people on other forums who are ticked off about this upgrade not working for their EAs.