I dont know exactly what you did but i expect you changed the default
"open" of a folder to "move to".
You do know that you only need to clik once for items in start menu to expand....?
I just looked at that xpsmoker program, it asks you to make a restore point at the beginning, did you make one, if so you should be able to revert all your tweaks.
I don't see anything in xpsmoker that could have caused this....
When you right clik on the "programs" folder
do you see...
Open all users
Explore all users
here is a possible solution
clik folder options
then "file types"
scroll down to
(NONE) File Folder
does it say anything in the box, it should be empty, but yours probably says "move"
or something else?
mark "move" and
mark (NONE) Folder
there should only be
mark "explore" > set as default
Remove or keep anything else other than explore or open.
if it doesn't work reboot to set it right.