What am I doing wrong with Logging?

[joes]

Hi,

I'm trying to do a simple build with one master build script. However, when I transform the XML log into a HTML log and try to send it out in email I keep getting this:

Building project step 'Process Build Log and notifications'...
Building project step 'Transform XML Log'...
Closing any open log tags...
Loading XML input document...
Error at line 17301, position 2 loading 'C:\DOCUME~1\build\LOCALS~1\Temp\bld15A.tmp': Only one top level element is allowed in an XML document.

I've experimented and I can't find a reason for this failure. I just tweak until it seems to work, then it works a few times and then fails again.

What do I need to do in the simplest case to get this to work?

I've attached a simple build file that fails for me.