Hi there,
I got once the same problem and my solution was just to open the map file like a hps file. Then search for the word "compound" and you should find something like this:
<Compound Active="true" Group="0" ID="322" Name="Compound_1" Rotation="0 0 0" Scale="1 1 1" Tag="" WorldPos="4.625 72.125 -1.375">
<Component ID="69" />
<Component ID="68" />
<Component ID="70" />
<Component ID="58" />
<Component ID="63" />
<Component ID="71" />
<Component ID="59" />
<Component ID="60" />
<Component ID="66" />
<Component ID="64" />
<Component ID="53" />
</Compound>
Just delete this whole thing and save it, but you should make a copy of your map file first.