Upgraded Magento from 1.5 to 1.7. Everything works fine except edit categories. And i also have problems with special characters. The shop is in Norwegian. I can add products and attributes but i can¨t edit categories. The page edit categories page loads fine but then all the options disapear. I can see the categories and i can move them but i cant create new ones or edit them. Some of the categories has special characters from the norweigian language in them and they dont even show up on the frontend.
I have googled this problem and tried many of the fix people are suggesting but i can´t get it to work.
Anyone know how to fix this. I might even be willing to pay someone to help me if the price is right.
Click thumbnail to see full-size image