When you install an application and it sets up Windows File
Associations, it can set up one or more Actions with whatever names it
wants. Media players usually set something like PLAY. Image viewers
may use VIEW or SHOW or DISPLAY, etc.
WLM, like Outlook Express and the Vista Windows Mail are looking
explicitly for an action called OPEN. If not found, you get your error
The fix is to add an OPEN action to the Windows File Associations that
has the same command line as the default action. You can do that for
any application because it's outside of the application. It's a Windows
configuration setting. It's just that the for some applications, the
developers didn't think to add the OPEN action during install. It was
during XP SP2 that Microsoft tweaked the security settings to use the
OPEN action rather than the default one. Presumably it makes things
more secure, but I don't know how.
For another take on this issue for PPS and PDF files, see the following:
Unable to open .PPS attachments directly from Outlook Express
Unable to open .PPS attachments directly from Windows Mail in Windows
Unable to open .PDF attachments from Windows Mail
Mike - http://TechHelp.Santovec.us
Post by Michael Santovec
The issue is that WLM needs the file associations to have an OPEN
action. When you save a file and double click it, the default action
gets used, which could be something like PLAY.
Take a saved WMV file, Right click and select OPEN WITH and browse to
your desired player program and check the box to always use it.
See the Identifying Attachment File Types and Setting File
Decoding Internet Attachments - A Tutorial
'Decoding Internet Attachments - A Tutorial'
Mike - 'Santovec - Technical Help' (http://TechHelp.Santovec.us)
Problem solved, kind of. So only certain media players have a open
action that will work correctly with WLM. I tested using WMP and
attachments will play. I use VLC to play videos normally. I'll have to
check on some of the other file types and see what happens.
Thanks for the help.