Considering the high value ASCII characters, try replacing the definition of $master with this definition:

$master = [[156,128,64,247,239,106,36],
           [53,95,111,117,102,241,148],
           [122,87,81,154,152,55,79],
           [175,106,92,125,105,171,131],4,7];
[download]

This way, you shouldn't have to worry about copying and pasting high value ASCII, as I've put the decimal ASCII values into the definition. If that still gives you problems, let me know.

-Sherlock