Maybe there is a filter applied in one of the columns? It may be a "space" so doesn't clearly show.
Check if there is a way to clear all filters or go to each heading and clear all values that may appear in it.
I tried everything I know but the problem still persist.
I'm thinking about a disinstall and re-install the complete EM client with the .200 version.
But it says
Components: 0 (Total: 40)
so there are components active that the CCM lists.
Yes, but I'm not able to see them.
Can other users from other clients see any components?
If they can't so a client reinstall will probably not help.
Were you able to resolve your problem as I am having the same problem.
I completely uninstalled the client and installed the latest one release.
I know you reinstalled and hopefully that solved your issue but I wanted to make everyone notice that the Actions icon is shown in his screen shot which tells me that most likely a Plug-In (Control Module) of an agent was selected and clicking on the icon should have shown the same options you'd get if you'd right click on the Plug-In.
So looks like you were on a Plug-In that got deleted by someone else in the CCM and it had nothing to show. Now normally you'd have a Component Tree to the left of that window which allows you to select other components but your screen shot does not show it. May be it was collapsed? Brining it back would have allowed you to select a different component and get you out of this jam as Lars Mahrendorf astutely noticed, the status bar says:"Components: 0 (Total: 40)" so Control-M knew there were more components in the environment.