It's a conflict betweeen Awfultanker Session Stats and Auxilium. I asked the author about it, waiting for response.
Also one more thing, you are installing Auto Equip from Auxilium and standalone - dont do it.
In hangar there is a menu under ESC key, you can select one of predefined setups with name of streamers etc (from drop down menu). there is also hotkey which you can use to change them on-the-fly while in battle.
Cannot help you more as this is a local issue with permissions and file rights. You probably have the file locked, bad permiossions or something like that.
Tak jak pisalem, generalnie to wina WG ze tego tam nie ma, oni to usuneli jakis czas temu, potem jakis mod to przywracal, chyba XVM, ale aktualne xvm nie jest ukonczone, dziala czesciowo tylko.