Write another program that just reads the dictionary file and check if it is ok, or create a new one with the words you want. My guess is that there is something wrong with the file because your program worked just fine with me.

$ perl hangman.pl 
--------

 Your Guess: I
--------
 O

 Your Guess: P
P-------
 O

 Your Guess: a
P-------
 O
/
 Your Guess: s
P-------
 O
/|
 Your Guess: d
P-------
 O
/|\
 Your Guess: f
P-------
 O
/|\
/
 Your Guess: g
 O
/|\
/ \
Sorry, the word was Printer
.
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update: You should notice that the label Outer is not case insensitive.