Help! avast! Setup Fatal Error

Hi,
i have some problems with avast…
Not too long time ago i reinstalled my win and then during avast instalation it showing me this report…
avast! Setup fatal Error
Error reading product data from “C:\part-setup_ais-fffffffff.vpx”. Setup cannot continue.
after completing setup it says instalation failed but when i click on done button avast was instaled… so i thinked its ok…
then when i install grafic card driver it shows me the same bug report and when was instalation complete it again shows me instalation failed but after reboot it was instaled, but i cant instal updates…
same bug report during instalation software of printer and then i cant connect it with my pc…
same bug report during origin instalation…
ant it blocking few others programs
so i reinstalled my computer again and its the same as before 2nd reinstall
many programs working good but these are important for me…
so i uinstalled avast with avast uinstall ulity (aswclear) but it still showing me that bug report (as example when i want start origin)
What i have to do?