That's DTF telling you that the session isn't available when deferred. I assume 
DTF has a CustomActionData mechanism for passing property values into your 
deferred custom action. 

Phil Wilson 



-----Original Message-----
From: Alexander Volkov [mailto:volkov1...@gmail.com] 
Sent: Tuesday, February 23, 2010 3:49 PM
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] Triggering a Custom Action ONLY When All Files Have 
Been Deployed

Thank you very much for your prompt response, Phil.
The thing is I pass some arguments into the custom action, and if I
use "deferred" the installation crashes and gets rolled back.The
Exception is "Cannot access session details from a non-immediate
custom action"

Any input?

Thank you very much,
Alexander


On 23 February 2010 15:39, Wilson, Phil <phil.wil...@invensys.com> wrote:
> Execute = deferred!!!!! That's what you need. Immediate is before files are 
> installed.
>
> Phil Wilson

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