I have problem with change interface

[alaidleon 0]

Hello, 
i have a problem and i think would can help me,

sorry for my bad english

my problems is, i try to change interface, and my first error is in import MD5, but a read to erase this line, i try, and now i get this error.

 

Can help me? 

 

[alaidleon 0]

Close pls!

i encontered the solution in my case, 

i try to changue the login interface and when i change say  this error, 

i check line for line the code and find a one line so much misterious 

 

execfile(loginInfoFileName, loginInfo)

 

 

is a one bug in python 2.7 and the instead a null