Unable to Delete AVI Fix.
Open regedit and go to:
HKEY_CLASSES_ROOT\SystemFileAssociations\.avi\shellex\PropertyHandler
Delete the value you find there.
This is due to XP (explorer in particular) trying to create a preview
for it. Now because the file is corrupted or incomplete,
it cannot read it properly, hence, it will not release the file.
This prevents explorer from doing this.
As usual, backup the registry key before deleting it.
