SC2Mapster

In my map, I am using HotS dependencies, but I wanted to have back the WoL-styled World tooltip (white-colored font except of brown), so I cloned the "HotS_WorldTooltip" layout and replaced the text style value by the one I found in "WorldTooltip".
So far so good, works properly, no errors. But now, I transferred that new asset into a mod file since I want to use it for multiple maps. The fix does still work, BUT everytime I test the map, i get the following error:

UI: File [TooltipFix.SC2Layout] Line [2] Column [1]. Attempting to add a desc named [TooltipFix] to [] with the same name as an already existing child.

However, when I do not close the game window and restart the game, that error won't pop up.

Anyone knows what could have gone wrong here and how to fix it?

Bump!
Still got this problem... Does no one have an idea what could cause this error?
This is the "TooltipFix.SC2Layout" I am using:

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Desc>
    <Frame type="WorldTooltip" name="WorldTooltip" file="WorldTooltip">
        <Insets top="20" left="20" bottom="20" right="20"/>
        <MaxWidth val="370"/>
        <Frame type="Label" name="TipLabel">
            <Style val="@@StandardTooltipHeader"/>
        </Frame>
    </Frame>
</Desc>

Do you have it included twice: once through dependencies and once in the map itself perhaps?

I've never worked with a layout specified in a custom dependency before so I don't know much about it.

Nope, it is only specified in the mod.
Is everything with the code alright? I have pretty much no experience with custom layout stuff I just copy all the stuff together that I need to overwrite the old files.

EDIT: Ok, looks like it actually WAS specified in the map... Although I had deleted the maps entry of "TooltipFix" in the UI editor before, there was still an entry referring to that file in the "UI\Layout\DescIndex.SC2Layout" file that decided to stay. Now after I deleted that one the error seems to be gone.