"%1 is not a valid Win32 application."

zachd [ms]

unread,

Feb 20, 2004, 4:08:06 AM2/20/04

to

Is that error from WMP, or from the system? That is: does WMP launch first?
Does going to WMP's Tools:Options:File Types and reassociating things to WMP
there help?

--
(speaking for myself and doing this in my free time)
See http://www.nwlink.com/~zachd/pss/pss.html for some helpful WMP info.
Following up to your post with the resolution is good netiquette.
This posting is provided "AS IS" with no warranties, and confers no rights.
All e-mail to this account will bounce or be deleted - *use the newsgroups*.
--
"Bob" <anon...@discussions.microsoft.com> wrote in message
news:D103ADF1-CF12-46EE...@microsoft.com...
>I downloaded Windows Media Player Version 9.00.00.3075 from Windows Update,
>along with the Codecs. When I try to play a .wmv or .mpeg file, or
>anything else, I receive an error message, "%1 is not a valid Win32
>application." The Help site identifies the message as 800700C1. I am
>running Windows XP with all updates. Any help?

Bob

unread,

Feb 20, 2004, 6:01:06 PM2/20/04

to

Zachd,
Thanks for your reply. The player launches first, then the error message "%1..." displays in a box in the middle of the player screen. The box has two buttons: "Cancel" and "Web Help". I do not know if it is WMP or my system thst displays the error. Web Help brings me to MS, where the error message is identified as 800700C1. I am trying to play an mpeg video from an internet link. This type of file played correctly before I updated WMP from Windows Update. All file types are associated with WMP in the Options dialog box. Re associating did not help.
Thanks,
Bob

----- zachd [ms] wrote: -----

zachd [ms]

unread,

Feb 21, 2004, 2:44:09 AM2/21/04

to

Do the files work correctly if you save them to disk first?
What 3rd party MPEG/MPEG2/DVD software do you have installed?

Does mcspmpeg.ax exist on your system (probably in the system32 directory)?

-Zach

--
(speaking for myself and doing this in my free time)
See http://www.nwlink.com/~zachd/pss/pss.html for some helpful WMP info.
Following up to your post with the resolution is good netiquette.
This posting is provided "AS IS" with no warranties, and confers no rights.
All e-mail to this account will bounce or be deleted - *use the newsgroups*.
--
"Bob" <anon...@discussions.microsoft.com> wrote in message

news:F2D80145-A830-4D3C...@microsoft.com...

Bob

unread,

Feb 21, 2004, 3:31:05 AM2/21/04

to

.MPEG works if I save it to disk first, but not from 'net. .WMV causes the same error message if opened from 'net or from local file. I also have VuePrint, Intervideo WinDVD and Quicktime installed. mcspmpeg.ax does not exist on my system.

Bob

unread,

Feb 21, 2004, 4:08:17 PM2/21/04

to

Zachd
I reinstalled the player from the WMD site. This version
works. Thanks for your efforts.
>-----Original Message-----
>..MPEG works if I save it to disk first, but not

> news:F2D80145-A830-4D3C-B77A-
2A104B...@microsoft.com...

> > news:D103ADF1-CF12-46EE-AD56-
C246DF...@microsoft.com...

> >>I downloaded Windows Media Player Version
9.00.00.3075 from Windows
> > Update,
> >>along with the Codecs. When I try to play a .wmv
or .mpeg file, or
> >>anything else, I receive an error message, "%1 is
not a valid Win32
> >>application." The Help site identifies the
message as 800700C1. I
> > am
> >>running Windows XP with all updates. Any help?
> >>>

>.
>