How would anyone know what the problem might be without reproducing exactly the scenario you outline. I would need to add all those update sites to my preferences, I would need to have installed whatever you installed before; keep in mind that there's no way for anyone else to know what you've installed before because you've not spelled that out, nor would be be able to create the historical state from which you installed those things. Then we'd need to try to do the update to see what failed exactly the same way as your are seeing it. At that point we'd have no more details about the failure than you currently have, which is pretty sparse, right?

On the other hand, if you had an Oomph setup, you could share it and ask, why doesn't this combination of things install successfully? No only that, if you had such a things, the p2 "explainer" would produce a detailed trace of what couldn't be installed and why it couldn't be installed and with that information you might be able to figure it out yourself, or at the very least, someone like me could explain what's gone wrong.

Who do you expect would will spend an hour to try to reproduce your problem?