Dave-UK wrote:

"Allen" wrote in message
...
When I try to make certain entries in Default Programs, some work but
others don't. The specific failures are in trying to use IZarc for
.rar and .zip files and Windows Font Viewer for .otf files. The system
appears to accept thes, but when I click on one of these files I get
the usual "what can I used to open this?" message. Also, the message
"always use this?" message is grayed out both in in Default Programs
and in the Open File box. I have tried to make these entries at least
twenty times each, each time apparently successfully--until I've tried
to open a file. Another note--these worked just fine in Vista. Any
clues or hints?
Allen

Have you tried using the 'Associate a file type or protocol with a
program' setting?
Control Panel Programs Default Programs Associate a file type...'
Select your file extension and then 'Change program'.



Thanks, Dave, but that's what I've been doing repeatedly. I've
discovered a new wrinkle, though. OTF fonts that were on my system
before conversion open just fine. Those in .rar files will not open
(don't have any ZIPs to try it on) although they would open just fine in
Vista.
Allen