HELP! jpeg's distorting when rotated - no idea why

Hi all
This is a bit of an odd problem. I have created a movie of 1 frame that will act as a home page. On this page are several buttons that, when moused-over, will change the color of adjacent jpegs (jpegs are each incorporated into their own movie clip). I changed the color of the jpegs within the MC’s using the ‘Color: Advanced’ tween option. Each of the jpegs within the MC’s had been rotated slightly for effect.

When I initially published the swf, everything worked fine and the jpegs changed color exactly as they should. Below I have included a cut-down example of this (mouse-over the word ‘images’ to see):

http://www.mishapopov.com/correct.html

I then added a second frame to the main movie with the intention of fading objects in etc when the page loads. This is where the problems occurred. Simply by adding a second frame to the main movie (a blank frame on a blank layer), the jpeg images now appear all distorted. The second frame of the main movie is never actually reached (due to a ’ stop(); ’ on frame 1 which is present in both examples) and NO other changes have been made to the movie. Below is an exampe of this:

http://www.mishapopov.com/error.html

note that in the actual version, the images remain in the same rotated position the whole time, they only change color. I added the motion to highlight the error but it still occurs even when they are stationary.

I have no idea what is causing this, I have only found one reference to a similar problem which was to rotate the individual MC’s containing the jpegs, instead of the jpegs **within **the MC’s. I tried that but it didn’t fix it.

I also tried using PNG’s instead of JPEG’s but that didnt work either.

Sorry its a long post but its a bizarre problem!
Would love any help, cheers
Misha