I downloaded the free home edition of avast 4 THREE times (2 italian, 1 english) but when I open the setup file a message pops up telling me that some components are missing and to update the program... the logfile (?) tells me that I have not enough rights to continue and an error occurred in creating registry (error code 0x00000005). I absolutely don't know what a hell this means. Is it connected to the previous use of the trial version (now expired) of avast 4 pro?