runas /user:USER problem and a strange behavior of runas

Hallo NG,

if I try to use the runas command in a batch
file or in a shortcut like:

C:\Windows\System32\runas.exe /profile
/user:MYMACHINE\stduser C:\Windows\System32\notepad.exe

or

C:\Windows\System32\runas.exe /noprofile
/user:MYMACHINE\stduser C:\Windows\System32\notepad.exe

I get the following error:

C:\>notepad.lnk
Enter the password for MYMACHINE\stduser:
Attempting to start C:\Windows\System32\notepad.exe as user "MYMACHINE\stduser" ...
RUNAS ERROR: Unable to run - C:\Windows\System32\notepad.exe
1060: The specified service does not exist as an installed service.

C:\>

Since about two weeks I get this error, but I
don't know how to fix that.

btw: notepad.exe is available and there is no
problem to start it in a normal way. I'm just wondering
why the system say "The specified service does not
exist..." if I would like to run at an another user.
I know, it's just a usal program, not a service... :-(

I hope that somebody can help me to fix this
and perhaps explain what's wrong in my system.

S