DVD player has two control windows, can't press any buttons.

Question

The internal disk drive on my Late 2009 Mac mini has been non-functional for longer than I've had it. However, I've never really needed it until recently. But when I tried using my new external drive (which runs perfectly and is most certainly not the source of the problem) I encounter one of the strangest glitches I've ever had using Macs!
The DVD player uses the old (brushed metal, 10.6-style) control panel in the bottom-right corner... Until I turn on full-screen. Then the GUI changes to a glazed black appearance (10.7-style) and all of the controls are unresponsive. The features can be triggered by the hotkeys (space bar to play/pause, etc.) but none of the actual buttons can be clicked on. The interface still fades in and out with mouse movement though.
But it starts getting really strange when I exit fullscreen again. Now the brushed metal interface has odd white corners as if the alpha channel is being ignored! https://dl.dropbox.com/u/14403620/brokeninterface.tiff And what's more, though I was unable to reproduce this after a few attempts, once it actually brought the normal control window into fullscreen! There were then two contol interfaces, neither of them could be pressed (though the normal one works outside of fullscreen) and the normal one could still be dragged around the screen yet wouldn't fade away when idle!
Now please note that I am running OS-X 10.7.5 upgraded from 10.6 in the past and the DVD player may not have been original to this computer. I am also using SIMBL and Maximizer and have both Quicktime 7 and Quicktime X installed.
There are thus many things which could be causing the issue, but I have no idea what actually is.
Any insight would be appreciated. I can provide more information if nessesary.

Answer 1

Stan -
Thanks again for the simple but valuable tip.
I'm just going to repeat the relevant sections from my previous post with the screenshots this time:
Below you'll see a snip of how my current folder structure appears. It's identical to yours, except there are no button files in the General Folder. Since you were kind enough to include a file name, I did a search on that specific one and it's nowhere to be found on my hard drive. Hmmm....
I've seen others remark on how... "challenging".... Adobe's instructions can be sometime. I'll admit to having the same feeling when I was trying to download and install all the content files and the 7-zip stuff. Is the answer somehow that I screwed up that?  Note the 7-zip folder right above the Adobe folder. Here's a screen shot of that expanded folder contents:
Does that look like you think it should? Have I not installed or extracted something correctly?
Finally, the only other thing I can think of to give you as much info as you might need is to include a screenshot of where the "Functional Content" stuff got saved. Adobe's instructions about this (if I recall correctly) were that it did NOT have to be installed anywhere specific, but you then had to go into Encore (& Premiere) and through preferences point to this stuff, which I believe I did. But I don't see any button type files in these anyway.
Other thoughts or advice?
Thanks!