[Garkin]

How your xml looks like? It should be something like this:

<GuiXml>
    <Controls>
        <Control name="EventExplorerRow" virtual="true">
            <Dimensions y="45"/>
            <Controls>
                <Label name="$(parent)Id" font="ZoFontGame" horizontalAlignment="RIGHT">
                    <Anchor point="RIGHT" relativePoint="LEFT" offsetX="50"/>
                </Label>
                <Label name="$(parent)Name" font="ZoFontGame">
                    <Anchor point="LEFT" relativeTo="$(parent)Id" relativePoint="RIGHT" offsetX="20"/>
                </Label>
            </Controls>
        </Control>
        <TopLevelControl name="EventExplorerWindow" mouseEnabled="true" movable="true" clampedToScreen="true" hidden="true">
            <Dimensions x="760" y="650" />
            <Anchor point="CENTER" />
            <Controls>
                <Backdrop name="$(parent)BG" inherits="ZO_DefaultBackdrop" />
            </Controls>
        </TopLevelControl>
    </Controls>
</GuiXml>

There is no UI error with this .xml file.