Skin resets every time

Hi,
I used this skin for ages, and then I don’t know what changed, but now it resets to default every time.
In fact, I have to press “s” – select “Reload skin” every time I log in.
My other them retains its settings. I have tried saving and re-pasting the GUIsettings.xml file over and over- but it still defaults to orignial state.
I ave to re-add my shortcuts, and submenus too often.
Would appreciate idea to solve. The skin is too good to change to something else.