I tried to install the 8.45 version that you linked to me, but not succeeding (it told me that files were missing and that I had to close the applications and then resume the installation) I tried to reinstall 8.63 (also during the installation of this last I get the same message). I can no longer install VideoPad, unfortunately I have to give up. Thanks for the help you have given me so far.
I tried to close the applications and resume the installation, but I still can't complete it.