Wings appear invisible

Hello everyone, Needless to say I stumbled on this superb forum this evening via google as I'm a little stumped on a new purchase I made today.So this evening I purchased the Seneca II and the C340 II packs from the Just Flight website to add to my ever-growing collection of Cerenado aircraft. When FSX first loaded up, it asked the usual "Would I like to activate and run the following new items" etc which I selected yes/Run to.Then when the aircraft preview came up, the wings weren't there! Strangely the props, nose cone and the walk plates on the wings all show, as do the nav / anti-collision lights but no wing structure / flaps.Weird... The Seneca worked fine.So, I uninstalled, re-installed with Admin Rights (Windows 7 64Bit) and tried again. Same problem again! Any ideas - I didn't find anyone else on the web with the issues :( Edited to add: I now have 5 Cerenado products and this is the only one I've had issues with.I've checked the textures folders and they all appear present and correct.Cheers allLee