Hello guys, how's it going?

I have run the latest update following the instructions on the documentation.pdf and the Portuguese Language is now effective.
That is really great. Then I imported all the categories Im going to need on this instance. Checked it they were properly imported and yes, they are all there, ready to be used.

However when I try to insert a new item, all I get is a blank screen. Could it be a bug? Prior to the update I was able to insert test items without any problems.

Thank you