Drop 9 not a valid win32 application

Topics: Prism v4 - WPF 4
Oct 6, 2010 at 3:39 AM
Edited Oct 6, 2010 at 4:14 AM

When I tried to install Drop 9, it said it was not a valid win32 application.  I tried this on 2 computers.  I tried to install just by clicking on the exe from windows explorer, and I also tried to install it by using Run As.  I am using WIndows XP Pro.

Oct 6, 2010 at 9:00 AM

Same here.

Oct 6, 2010 at 1:26 PM
Edited Oct 6, 2010 at 1:28 PM


The version updated in Oct 6th (today) works on 64-bit systems. I downloaded and tried it, and found no issues.

Could you please try to download it again?

The release notes mentioned this problem.

Hope this helps.

Fernando Antivero


Oct 6, 2010 at 2:58 PM

I downloaded the source again (Oct 6th) and I still have the same issue.

Oct 6, 2010 at 6:02 PM

I'm having the same issue also.  Win XP 32-bit.

Oct 7, 2010 at 11:38 AM


The product team has refreshed the drop 9 download (Prismv4.Drop9.Source.2.exe). From the release notesthe 32-bit and Windows XP issues that were reported below have been addressed.

Fernando Antivero 


Oct 7, 2010 at 1:54 PM

Works. Thanks!  -- Mike

From: fantivero [mailto:notifications@codeplex.com]
Sent: Thursday, October 07, 2010 4:39 AM
To: Johnston, Michael G
Subject: Re: Drop 9 not a valid win32 application [CompositeWPF:229751]

From: fantivero


The product team has refreshed the drop 9 download (Prismv4.Drop9.Source.2.exe). From the release notes: the 32-bit and Windows XP issues that were reported below have been addressed.

Fernando Antivero

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Oct 7, 2010 at 5:53 PM

I am now able to install Drop 9.

Oct 7, 2010 at 5:57 PM


Nice to see this and thanks for notifying it. Let us know if you have any other question.

Fernando Antivero 


Nov 29, 2010 at 4:26 PM

I see the same issue with the latest drop of Prism4; on 32bit xp, I can't run the exe.

Nov 29, 2010 at 4:40 PM


I have provided you an answer in your original forum thread. Therefore, you can find that forum thread interesting.

Fernando Antivero