Have you played with the Media/@CompressionLevel at all?  I'm not sure what all 
the defaults were but it is possible WiX v2 as doing "high" compression at one 
point in time and v3 is doing "mszip" or something like that.  Otherwise... 
there could be something more subtle going on and it would be great if you can 
help us get to the bottom of it.

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Stefan Küng
Sent: Tuesday, September 25, 2007 08:49
To: wix-users@lists.sourceforge.net
Subject: [WiX-users] size of msi 20% bigger with wix3 than with wix2

Hi,

I'm trying to switch my current wxs files from wix2 to wix3. After
getting rid of all the warnings wix3 gave me and changing the
deprecated/removed elements, I could successfully generate the msi with
wix3.

But the size of the resulting msi is 1.6MB bigger when created with wix3
than it was with wix2. With wix2, the size was about 8.6MB, with wix3
it's 10.2MB. That's an increase of about 20% which I can't explain.

I've 'extracted' the msi with 7zip to separate folders and compared the
contents. I also compared the contents of both (wix2 and wix3) msis with
Orca, and everything seems to be identical. With the exception of the
cab file embedded in the msi. With wix3, the cab file is 1.6MB bigger
than the one which gets embedded with wix2.

I've also used 7zip and powerarchiver to check the cab files. Both have
167 files in them, and the compression method used (according to 7zip)
is "LZX:21" for both of them. I can't see any reason why one cab file
would be so much bigger than the other.

What am I missing here? Do you guys have ideas on where I can look for
reasons or what I should check?

Stefan

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