I inherited a sandbox solution deployed to an SP2013 and I am currently struggeling to add a new feature version.
Somewhere I read that sandbox solutions are no longer soupported in 2013 - but I could not find any official statement on that.
The only nearly-official statement I found was on http://blogs.msdn.com/ stating that no-code sandboxed solutions are still supported in 2013.
Does that mean that feature-receivers and upgrade-action-receivers are no longer possible for sandbox solutions in 2013?
Somehow I am unable to deploy even the simplest sandbox solution if I added a feature-receiver.