Mark,

You are right. It is a new way of adding winglets. I was cutting and pasting my .cfg entries for all my repaints after the 4.4 install and the sim and model entries were still using the 4.3 entries so the sim could not load the winglets because it was looking for the RRW and PWW models as it did in 4.3.Once  you suggested that 4.4 doesn't need the W models and I could simply add winglets with the ui_wglts=1 edit, I deleted the last W from the .cfg entries and...voila...we have winglets!Thanks for the help :).Learn something new everyday in this hobby!

Alex C