I just uploaded a new bugfix for beta4. The following things have been changed in beta4b:
* Fullscreen button disabled until the movie is fully downloaded to avoid a Flash plugin bug
* Preload bar is now again above the loading image
* PanoVideo: Frame only updated if the video input has changed
* Skin files can now be compressed with DEFLATE (=standard ZIP files)
Pano2VR beta4b release
MfG, Thomas