Terminal Services - Installshield Error

[Viz]

Our install.msi file calls a dll we've written to create a
user account. However, our install no longer works when
being run via Terminal Services. I'm installing onto a
Windows 2000 machine from Windows XP. I've run both the
Terminal Services client and the Remote Console built into
XP.

The error box I get when it fails is (title and message):

InstallShield DLL Custom Action

Unknown source ".

If I remove the call to the dll, it works fine. If I run
it on the remote machine locally (not via Terminal
Services), the dll call and the install run fine. After
searching the web for this rather interesting error code,
I found that 2 different companies had also encountered
this problem and noted that if the install is run silently
(msiexec /q) that it works. I verified that that is the
case for us as well; installing silently works.

Can you give me more insight as to why this is happening?

Thanks,

Viz

 

[Matthew Harris [MVP]]

Since you have access to the dll's source code (since you
wrote it), have you tried throwing in some debugging
commands to see what is going on or when it is failing?

On the other hand, this is probably a Windows Installer
issue, so have you tried updating your version of windows
installer?

-M