Hallo, I have the same problem. With PTE 7.03 and AVG free (last update) on a windows 7 64-bit system. Today afternoon, I received the message that there is a trojan horse in a pte, exe-file. Since then, PTE is frozen, also when I restart without AVG. I have re-installed PTE 7.03, but no solution. What can I do? After disabling AVG residentshield, I can work with PTE.