It's just the regular GB keyboard. I got it from here:It's a different file. The one you originally posted was only about 700kb and the one I posted was almost 1MB, meaning something was left out. I've been using the one I posted for several days and have had no problems with word prediction. Whatever works though.
What does the keyboard you have look like?
Download: Gingerbread Keyboard for Rooted Devices (Updated) - Droid Life: A Droid Community Blog
In looking over your linked file, it's pretty much the same thing... just that your main.dict file with the prespecified correction list is dated 7/2008, while the one I used is dated 2/2008, so while it's probably almost the same, yours may have added a few more words... either one should work though.