The v1.1 of the Lemmings Full Color Revolution patch is attached to this post. No one reported any bugs when I posted it back in September, so this is the formal package.

Quote from: The Lemmings Encyclopedia on 2012-08-25 04:19:56

@GuyPerfect: I know of this official patch: http://download.cnet.com/Lemmings-Revolution-patch/3000-2121_4-10236700.html . Do you know what that patch does and if it's still needed after applying your Full color patch?

Note: attached is my version of Lemmings Revolution.exe (CD label = 'Lemmings Rev'). The CD cover says (c) 2004. DCG 902350 | Dice Multimedia

that patch was to fix an issue in which the fall height which made a few levels impossible. it's glitchy though, I have the patch and still once and a while it doesn't work correctly. If you bought revolution after some date (some time in 2000) it comes with the patch already.
Supposedly; If you bought the game before that you would need the patch. You can see what goes wrong in a video posted in this thread below; at a certain height there is a chance that either lemmings will survive or die.

you can find some more info about that mysterious patch in this thread:
http://www.lemmingsforums.com/index.php?topic=585.15

(sorry I keep answering Guy's questions for him )

Attached to this post is Full Color v1.0 (Beta 4). This is a release candidate.

The updated Readme is as follows:

Code: [Select]

Lemmings Full Color Revolution!             Windows Vista/7 Compatibility Patch
Written and maintained by Lemmings Forums        http://www.lemmingsforums.com/
  Version 1.0 (Beta 4) - April 27, 2012


About this program:

As you've probably noticed, Lemmings Revolution has been falling apart over the
years as Windows went through its many updates. It started out innocently
enough on Windows XP: a few of the icons had wonky colors, but it was otherwise
okay. But then, when windows Vista and 7 came about, those icky colors just
turned full-on black. And the main menu became a virtually unusable cluster of
black rectangles. Oh, and the sound stopped working! It's a real mess.

Well, this handy little gadget fixes all of those problems. While the technical
details are beyond the scope of this readme file, the tl;dr version is that the
game program does not conform 100% to the DirectX specification. It was just
fine back on Windows 98 where it worked anyway, but as time marches on, we see
that the game was released with what we have since learned to be show-stopping
bugs!


Things that this gizmo will fix:
 * Restores audio on Windows Vista and 7. It was completely AWOL before.
 * Provides a new texture loading routine. This corrects the messed-up colors.
 * Tweaks the main menu graphics. Solid black rectangles are hard to read.


Things you can fix yourself:
 * Level 9-6, The High Dive, has practically never worked for users who
   selected the "Typical" installation option. This can be corrected by copying
   "lemmings.box" from the CD and into the Lemmings Revolution installation
   directory. For real. The installer doesn't copy it right for some reason.


How to use this bad boy:

 * This patch is only designed to work with the original Lemmings Revolution
   EXE files (the game has seen various releases), so if you have one with any
   modifications, don't expect it to work. When in doubt, just re-install it
   from the CD. Don't worry: you won't lose your save data.

 * Locate the Lemmings Revolution installation directory on your computer. By
   default, this is "C:\Program Files (x86)\Take 2\Lemmings Revolution\" for
   the North America releases. Believe in yourself. I'm sure you can find it.

 * Make sure "Lemmings Revolution.exe" is not read-only. You can check this by
   right-clicking the file, selecting Properties, then making sure the box next
   to "Attributes" is un-checked.

 * Copy the Full Color EXE file into the Lemmings Revolution installation
   directory and run it. If UAC is enabled, you will have to run it as
   administrator. To do so, right-click the Full Color file and select
   "Run as administrator"

 * The program will do its darnedest to fix up the Lemmings Revolution EXE so
   that it works correctly again. Be sure to read the contents of the window
   that appears for information on what it was able to accomplish. If there was
   a problem, it will let you know what went wrong.


Additional information:

As noted above, there's a few different versions of Lemmings Revolution out
there. In fact, no one's really sure just how many there are. It's not feasible
to track them all down to make a comprehensive list, so this patch is instead
designed to be flexible and figure out exactly what needs to be done by
analyzing the Lemmings Revolution EXE file that it's intended to patch.

Some of the code updates were too large or otherwise too complex to be fitted
into the original EXE file, so they were moved into a DLL file instead. The
Full Color program will produce one such DLL file when it patches Lemmings
Revolution, adding it to the installation directory. The file's name is
"patch.dll" and it is required for the game to run, so don't delete it.

In addition to patching the Lemmings Revolution EXE file, that DLL file itself
is configured to work specifically with the version of Lemmings Revolution
being patched. If you copy a patch DLL from a different installation of
Lemmings Revolution, it will not work. In order to ensure correct
functionality, always run the Full Color program on an un-modified Lemmings
Revolution EXE.


Change log:

 * April 27, 2012 - Original release
   - Introducing audio fix
   - Introducing texture fix
   - Introducing main menu fix


Credits:
 * Lemmings Revolution is ©2000 Psygnosis/Talonsoft and Take-Two Interactive
 * Lemmings Forums staff (http://www.lemmingsforums.com/)
   - ccexplore, for technical research, ideas and testing support
   - Guy Perfect, for reverse engineering and patch development
   - thick molasses, for bug investigation and testing support