there are 2 folders for doublet
#1 doublet
#2 doublet lite
they should be \sysmetrix\themes\doublet
and \sysmetrix\themes\doublet
If this is how you have them then there is another problem...If this is not how you have them them put them in that way. You could also unzip using the "Use folder names" option and point it to \sysmetrix\themes
good luck...let me know how it goes