Hi! I hope someone here will have an answer for me, or a suggestion for a workaround, as I've got a deadline on Thursday.

I'm creating an interactive PDF in InDesign CS5 (v7.0.4) with an image file that rotates 45 degrees each time the user clicks (until 360 degrees).

This has been done all in InDesign by adding a custom rotation animation to the image file, then group it with an identical frame, adding another rotation animation to that, ...etc. I found this procedure on some other forum post, and it works excellently - both in the preview and when exported to SWF (yes I know that is necessary for a PDF).

The SWF is then reimported to InDesign on a separate spread and exported as an Adobe Interactive PDF. Opened in Acrobat X Pro (with last update) it still works, but there is the inevitable white background to the SWF animation. I need to have stuff in the foreground, but not been able to arrange it properly in either applications.

In its properties within Acrobat I select transparent background ( - it was also exported as such, but that is known not to work). I exit the preferences and re-enable the SWF, and here is the problem:

The animation appears to "skip" the first, and thereafter every second, rotation of 45 degrees. Hence, on first click, it jumps to 45 degrees, then rotates correctly to 90 degrees. On second click, jumps to 135 degrees, then rotates correctly to 180 degrees... And so on.

Interestingly, by turning transparency back to off, the animations works flawlessly again!

I have tried everything: save, quit and reopen; do the same in bootcamp Windows on Acrobat 9 (I'm using OS X Lion); reorder and add duplicate 45 "frame-group" animations; etc... And I cannot find anything similar on the forums.

PLEASE give me a hand, and enlighten me - or if it's a bug or completely impossible, let me know that too.

My only alternative (I think) is to make it a timed animation, hence no user input - but with transparent background.

Thank YOU very much for your time!

Sigurd