Nope, no problem here.
(you should use Firefox, just sayin' ;))
Maybe a resolution problem, what is your screen resolution ?
Is your graphic card's driver up to date ?
Maybe your graphic card is too new so there's not any stable driver for it.
Why it has to be human readable?
If it's to check errors you could do a little program that translate the file into a human readable file. But more there are letters and words, slowest will be the computer to open/read it.
EDIT: And we all know that the hard drive is the slowest component in a...
Too much words, computer doesn't alla that.
Example of biome and style lines of your file:
B 12 7
S M
Example for the facades:
Facade1 StyleFacade24
Could be:
F1 24
Or that also could be directly written in a binary file.
Personally I think there should be a character creator like in The Sims or The Elder Scrolls.
So every player will be different. Also, it allows multiple races.