Hello,
if PhotoFiltre Portable is run with administrator rights (mainly happens for users who have UAC disabled), it creates the following registry keys:
HKLM\SOFTWARE\Classes\.pfi
HKLM\SOFTWARE\Classes\.pfs
HKLM\SOFTWARE\Classes\.pfv
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfi
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfi\DefaultIcon
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfi\Shell
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfi\Shell\Open
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfi\Shell\Open\Command
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfs
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfs\DefaultIcon
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfs\Shell
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfs\Shell\Open
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfs\Shell\Open\Command
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfv
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfv\DefaultIcon
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfv\Shell
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfv\Shell\Open
HKLM\SOFTWARE\Classes\PhotoFiltre.Pfv\Shell\Open\Command
I conducted the test with PhotoFiltre Portable 7.0 under 64-bit Windows 7 SP1.
Please fix this bug.