You can try to delete the file
BSplayer.USER_NAME.xml present in BSplayer installation folder (where USER_NAME is the name you use to login with the normal user profile) and then open BSplayer and select the skin.
As an alternative you can rename the
BSplayer.USER_NAME.xml (this time USER_NAME is the admin name one) file by removing the USER_NAME part (so that the new file name will be
BSplayer.xml), this way all the options stored in that file will be used for all the users
I hope that at least one of these methods will work
P.S.
If you choose the second method you should use only one .xml settings file in BSplayer directory.. :roll: