Debugging VS2008 VBScript custom install task

Question

I have an install project which has a custom action that executes a VBScript file. As it stands, this installation fails during the execution of this script with the following error:

There is a problem with this Windows Installer package.  A script required for this install to complete could not be run.  Contact your support personnel or package vender.

The script looks fine to me, but I can't see a way to debug it. Is there a way to output a trace message, or even pause execution of an install script for this purpose?

You can also try to execute the script directly, not from MSI, I mean using cscript or wscript. However, you may need to adjust it. — Alexey Ivanov
– Alexey Ivanov, Commented Aug 24, 2011 at 18:22
For reference, read why VBScript MSI CustomActions suck - it's much more robust to use C++. Even if it can't be done for this release (generally the case when Setup devs are under pressure to release), it's something to consider for the future :) — saschabeaumont
– saschabeaumont, Commented Aug 25, 2011 at 4:07

user128300 · Accepted Answer · 2011-08-24 07:58:41Z

1

You could try to insert the following lines into your script to output debug messages to a log file:

Set objFso = CreateObject("Scripting.FileSystemObject")
Set f = objFso.OpenTextFile("C:\Temp\logfile.txt", 8, True)
f.WriteLine "Debug message text"
f.Close

answered Aug 24, 2011 at 7:58

user128300

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