Dion,

My agent is CrownForex (they charge 1pip on majors but have a crapload of rules, the Swiss fellas) and i had a similar problem recently when i did the upgrade. Got an email from them saying lots on metatrade platforms (and all roads lead to Metaquotes Corp) been changed from, say, 1lot to 100000. Basically you're trading amounts now. I recoded my EA and it's back to operating now again. Lemmi know if it solves the issue.

Best
Groovy