load editor help!!

until yesterday all ok; then after unistallation of pc cillin 2002 antivirus a very strange thing; it's all right in my pc but 737 load editor is dead!! I can open it but I can't modify anything; all the numbers are 0 and the sliders to change the payload don't move!!I tried everything; I have unistalled and then reinstalled PMDG 737but nothing! I can't understand; perhaps unistalling pc cillin some dll file or other file coud have been deleted?could someone help me or give me some ideas?Thank you very much Alberto