Problem with the generated XML UI tag

[Airlag]

Hi,
today I downloaded your editor to try something out.
For my purposes it works very fine, onely one big problem:

I can't use any declared functions.
When I declare a function in a LUA file and use it (for example in an OnLoad event) I allways get an error message that I try to call a global function that is nil.

I tracked the problem down to the point that everything is working perfectly fine when the leading XML tag is

<Ui xmlns="http://www.blizzard.com/wow/ui/"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.blizzard.com/wow/ui/
..\FrameXML\UI.xsd">

the generated code is

<Ui xmlns="http://www.blizzard.com/wow/ui"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

xsi:schemaLocation statement missing. Unfortunately I can't find any option to get the correct tag generated.

Please please help me.