I couple things changed from Patch X, to Patch Y.
First: The folder in which you put your setups is called "settings" in patch X
In patch Y, the same folder is called "setups"
Second: In patch X, setups were named "myset.XF_GTI"
In patch Y, setups are now named "myset.XFG" (the abbreviated word for the car"
If you download patch Y sets from inferno, and are using Patch X, you need to change the file names.
Example: Patch Y set for XRG at BL1 = BL1.XRG
Patch X set for XRG at BL1 = BL1.XR_GT
Vise-versa for using Patch Y and downloading Patch X setups.