Alpha channel pictures saved by Preview, looks like garbage in photoshop..??

[Thrash911]

Hello fellas,

I am trying to create some fancy drive icons. I figured I would have a picture of my excact mac, with either a OS X or Windows picture (for Boot Camp) in the screen. I got the picture locally from here:

/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/com.apple.imac-iSight-24.icns

Copied it to the desktop. Opened it in Preview, and saved the biggest icon with alpha (alpha IS the transparency, right???) as a picture. I opened it in Photoshop to play around with it, but then the picture is all messed up (please see attachment picture). I have tried to save it in different formats within Preview, that supports alpha. I even saved it in Photoshop format, but picture is still messed up in Photoshop.

Some smart people out there, that know what's going on?

 

[Thrash911]

For those who might get the same problem in the future:

If you don't edit the picture in the "messy" area, just ignore it. If you just do your thing in photoshop and save it, it comes out fine. I have no idea why it does this...