After installing the AdobeCS6 I removed CS4 by using the Creative Cleaner Tool. Now Premiere Pro and After Effects don't work and windows wouldn't tell me what the problemm is. The rest of the CS6 is working fine apparently. Do I have to un-install then re-install all the CS6? Is it normal that the CC Cleaner tool do this? ... Thank you!
Advice around these parts is not to remove older versions after you install a newer one, because this is exactly what can happen. If you want to get rid of an older version, do that before you install the new one.
So yes, you may well need to reinstall.