Inventory problem

Hi! I have more or less broken my inventory :S I don't remember changing anything in it. It used to work very well, but today I can't take the items any more. I have tried to delete the existing savegame folder, checked the settings of my interfaces and more. The option "allow dragging items from the inventory" is activated, so I don't know what's wrong.
Yesterday I've changed a few things in the explorer, so I hope I didn't change something else by mistake. Does anyone have an idea?

It finally works again... I have copy/pasted the default values (from a new empty VS scene) to the explorer/eGame lines of my game Ved.

It seems that there was a wrong value in GamePreloadedPicBufferSize, and when I reset it to the default Integer 16384, finally the inventory works again. (I don't remember changing this value anywhere, but it was set to 38451).