I'm working on a sandboxed solution which consists of two features. Locally, I've developed and tested my solution. On my development machine, I can properly deploy my solution to the sandbox, activate it and then activate my two features.
Now I perform the exact same steps in SharePoint Online. I upload my WSP and activate it. My features are added. Upon activation, one of the features consequently failes. I commented out the feature activation code (custom handler) because I thought that could be the problem, but that didn't make any difference.
So now I'm stuck with a feature which activates perfectly onpremise, but fails online. Now what? I have no clue on where to begin looking; the only thing I can come up with is clear all components from the feature and start adding them one by one to find the one which is causing the problem. But that's going to take a lot of time, so I wonder if there are better ways.