First slide and subsequent slides are different sizes when .swf file is launched from web server

‌We use CP5.5, and a .cptx file was published to .swf. When played locally, it plays fine. However, when launched from our web server, the first slide displays correctly, but all subsequent slides are huge on the screen and the playback controls and half the screen aren't accessible. I have tried copying all slides into a new project and publishing, same issue. I've also deleted out all ppt slides and republished, no luck. I can rescale the project but the display size difference between the first slide and subsequent slides remains, even when I delete the first slide that displays differently. When I delete it, the new first slide has the problem. Again, the issue is only seen when the .swf is launched from our web server.