My apologies for reviving a somewhat old topic, but I figured it's better than starting a new one.
I installed the Center of Excellence - Core Components solution a couple of weeks ago to check it out. I now want to uninstall it again but am running into problems when trying to do so. I keep getting the message:
Failed deleting solution Center of Excellence - Core Components. Solution dependencies exist, cannot uninstall.
The dependency is the following:

The main reason I want to delete the CoE - Core Components solution is that for some reason a newly created solution that has nothing at all to do with the CoE solution now also has a dependency on that CoE Core - Outlook Connection Reference, which then causes problems when I want to import that new solution into another environment.
I have to say, the hassle that comes with wanting to uninstall the CoE is enough for me to not even want to bother installing it, it seems to cause too many issues. I guess that's why they recommend installing the CoE in its own environment, that way it can't mess up other existing or new solutions.
Anyway, any help with getting CoE uninstalled would be greatly appreciated.