New version 1.3 of the patch is available.

Have done some work on getting new scripts to compile and be usable in game after some detailed hacking on the existing scripts.

New in this version is a fix for the reef blue light bug for the original, D2D and Steam versions.
The fix for the D2D version is still being worked on as the scripts in this version differ from the original and steam versions.
The fix will make the game skip onto scene 4 after 3 waves as though you had killed the sorcerers.

Coming up in the next version a fix for the speed problems on the last level.

Will release some tools later as well in case anyone is interested in making further changes to the scripts.

Let me know if you have any problems.

Download from either
http://www.svcklead.com/DCoTEPatch.zip
or
http://www.svcklead.com/DCoTEPatch.exe
(you need .NET framework 2 or 3.5 installed)

Turns out the scripts for D2D are the same, I'd just corrupted them at some point oops!
Uploaded version 1.3.1 that now allows blue light fix for D2D version.