Hjt Not Working Properly

Hi, i just downloaded HJT on my sister's pc and everytime I try using it I get an error from windows that says windows has encountered a problem with HJT and will be shut down now….Anyone have any suggestions as to why this is doing this? I have it on my pc at home and it works fine!! Thanx in advance and Merry Christmas to everyone Chloe

Never mind, sorry finally got it to work lol.