cannot change any settings or contacts

[Tiberium]

After I installed SPB shell and HTC theme and HTC home customizer, I didn't realize this for a while but I suddenly find that I can no longer change or add anything on my cell phone. For example, I was trying to add something into my calender to remind myself but after I hit ok, it didn't add anything at all. Or when I add a new friend's cell phone number, after I hit ok, it did not add. This problem is repeatitive. I was wondering if anyone experience this or have any fix?