6600 system error

I just installed wildskinz and rebooted the phone, but phone would not boot. It stuck on NOKIA loading screen for about 5 min. I removed the battery and started phone again. When asked for PIN i get system error window. I can type PIN in the background and boot the phone normaly, but system error windows is still there. I can remove it by selecting OK. I can then work with phone normaly, only when screen saver starts i get system error again.
I have removed wildskinz and some other apps, but still error is here.
Also, when i try to access settings > phone > general i get App. closed gs
i also can't quick searc from phonebook, because i can only imput numbers.
Any idea?
tnx

try to reformat ur fone and mmc. dont install that app! ive heard of a lot of bad news about that app.

or try reinstallin wildskinz, disable it, den delete it. otherwise u haf to format ur fone.

FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT FORMAT

God i love that word...
Cheers