I have windows XP running 32 bit. I downloaded Comodo’s registry cleaner CSC_Setup_1.0.60093.19_2k_xp_vista_server2003_x32 and installed it. When I check for new updates, it tell me that there is an update. I download and install it, go back and check and it tell me the same, thre is a new update. Also when run diagnostic, it tells me ct.exe & cvbc.exe has been altered and to repair. I have done this several times.