error code 0 but message box Installation failed

[MarkoK]

Hi there!

I'm currently developing an installer for some of our device driver for Windows XP.
It's based on WiX v3.5.

When I install the stuff I get a message box indicating me "Installation failed" even when I use /qn option for msiexec. In the log file no errors a displayed and return code is 0.

So perhaps someone among us here can shed a light on this?
Log is attached.

Attached File ( Number of downloads: 16 )
 foo.log

[VBScab]

I almost never use return value from EXEs for testing installed state. I use the WindowsInstaller.Installer object's ProductState property or, at a push, retrieve a value from the relevant 'Uninstall' registry key.

[Zweitze]

Well that text 'installation failed' is not in the log, so it's not a text generated by Windows Installer.

I guess you (or WiX) included a Custom Action that shows that text. You may want to look at the log file while the message is shown - at that moment the install is not yet completed, and the last entries in the log may reveal the action that shows the message (this only works when the action is not an asynchronous action, but that's usually the case).