Hello Edgar !
the FixtureTypes.xml file it's inside the Catalyst Package .
To access inside it you need to right click on the Catalyst icon directly from the applications folder ( NOT FROM THE DOCK )
Once right clicked a menu will appear .
SELECT " Show content package " ( actually my OS is in italian but it should be similar to Show content package )
A new finder window will pop up .
Open the folder named " Contents "
Now open the folder named " Resources "
Scroll down until you find the file named " FixtureTypes.xml "
Hang on now .
Open Text edit , and once it's open in the dock .
Drag the FixtureTypes.xml on top of the text edit icon.
Now the FixtureTypes.xml should be open in the text edit app
and .... SGM Palco isn't there ....
I tough it was in there ! Never mind look at all the others examples you will find in the FixtureTypes.xml .
regards