Thats still stratpage_01 and its still alpha issue!
http://www.megaupload.com/?d=ED72G2HU
pasted last version of your file I had over working version in PhotoShop (elements) and saved as 32 bit and that works without white bits - not sure if its up-to-date version of your file that I used though, so don't overwrite anything without backing up first!

What image editor are you using? I know I have problems using PaintShopPro saving alpha if any of image within alpha contains any pure white (255, 255, 255), PhotoShop seems not to mind that though.

If you can't get anywhere with it and that wasn't right UI send me latest one and I'll do the paste job again.