SORRY - that's not it…i get the same for my URL, which works though.
Here's the actual problem. Both of you tried to edit the description of the map, where the link is. Chris inserted "Morgawr…" and Lobo_Gris inserterd some other name. The way you inserted that broke the original link in half.
this in turn broke the regular expressions that the wikidot validates these links (I'm assuming they use that).
anyways, if you fix that link , you should be fine. for instance this works fine (it's one of the two above) - note the a href tag which now looks different.
[[embed]]
<iframe width="600" height="500" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=106834310040442095266.0004658f85e258cb011b4&ll=19.569495,-99.118996&spn=0.161745,0.205994&z=12&output=embed"></iframe><br /><small><a href="http://maps.google.com/maps/ms?ie=UTF8&hl=en&msa=0&msid=106834310040442095266.0004658f85e258cb011b4&ll=19.569495,-99.118996&spn=0.161745,0.205994&z=12&source=embed" style="color:#0000FF;text-align:left">View Nuevo Depa in a larger map</a></small>
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