Hi, I have upgraded from FW1 3.1 to 4.3 (the latest version) and the beans are not initializing properly. Can anyone have any suggestions?

That's a big jump in versions. I would not recommend that. Update to 3.5 first and get things working. Then update to 4.0 and get things working. Then you should be fairly safe to update to 4.3 at that point. Each x.5 release of FW/1 typically included features to help you migrate to the next major version (because major versions tended to have some breaking changes). For example: https://framework-one.github.io/documentation/4.0/changelog/#breaking-changes (which could well affect how beans are initialized). I don't recall the major changes between 3.1 and 3.5 (and, unfortunately, there's no specific changelog for that version as far as I can see).

Thanks @seancorfield