Although this topic is old, the problem occurs many users of Windows 7.
"Catalyst Control Center. Host Application has stopped working".
In all the forums I've visited the solutions are scans, reinstall the original version or the latest Catalyst, and apparently none of these are successful ... The only solution seems to be reformatting the computer. But one is not always willing or have to walk TIMP formatting the computer, especially if it is not self, if not work, for example.
The solution I've found, gave good result without doing any of the above ...
The problem seems, is that the Catalyst can not read a file that is already in our system, especially if you already got the option to reinstall the Catalyst.
The solution is simple, I have paid off 5 times, with the same problem.
Go to C: / Users. Right click on this folder and choose Properties: GENERAL tab, and select the last box: Attributes Hidden. Palomearla and give APPLY.
Ships warning to administrator permission and another, wondering whether to affect all folders and subfolders. Yes !, OK. Then began the process where all folders will be hidden ...
When finished, turn off the last box hide. And giving again: Apply. Begin again the process in reverse and be visible all folders ..
After this, restart the computer and see that does not come out the Catalyst warning ... What we did was to make visible to the program boot files you need (do not know the entire process, perhaps you can uncover here), but what a fact is it works ...
Pd.- If all folders disappear and can not find back the Users folder, you must do it in Explorer, go to Tools / Folder Options / VER (tab) and select "show files, folders and hidden units". Then you come back to see the Users folder on C :, as shaded. Now, give right click, properties, uncheck the hidden folder and Apply-OK ...
regards