what firmware are you on?
if its 1.1.3/4 the dialer part of the screen, and the header (the part with the glassy effect) have to be seperate images from the addcontact/delete/call buttons. The dialer part has to be 320x273 and the header has to be 8x73 with and alpha mask that makes the whole image 8x128. When I made your files I did it the same way i made mine by crop/copy/pasting the appropriate parts on the the appropriate files and it worked on mine. It should have worked? I'll try doing it again and will post it sometime tomorrow. It's after 2:00am here and im goin to sleep. Thanks for your help though! Greatly appreciated!
ps: I just figured out that the call button has to be a repeating image of 3x64 sort of like how the header works. I used the header you made for me to make a more matching call button. The images to edit are callbkgnd.png and callbkgnd_pressed.png inside MobilePhone.app
also: heres an original unpacked .artwork file so you can see what the images should look like
pngs.zip - 0.07MB
heres another copy of the .artwork file you wanted for your tigger theme. I tested it on my phone and it works fine. It still needs a pressed version of the dial portion to be complete though.
mobilephonepackedimages.artwork - 1.36MB
also, heres a copy of the your dialpad that needs a pressed version. if you make one I can add it to the .artwork file
mobilephonepackedimages-30.png - 0.07MB
p.s.s: I like how you made the pressed versions of the addcontact delete buttons. Do you think you could make one for my theme using this image? You'd just need to add that flash effect ontop of each of numbers/symbols as is.
mobilephonepackedimages-30.png - 0.20MB
heres my theme so far, looking pretty good. Thanks a lot.

like I said above, its impossible to make a picture as a callbutton background. It has to be a repeating image. You'll have to do something similar for your theme, but since its mostly black it shouldnt be a problem. You'll also have to edit the callglyph pngs to make your orange call button.
edit: i figured out how to make call button image show up. you have to edit the callglyph_big.png image inside mobilephone.app. its not part of the .artwork file