Open InfoWindow on Marker throws exception

[jd]

Hi,

I can open an info window on a point but when I try opening on a
marker an exception is thrown.

This works:

map.getInfoWindow().open(latLng, content);

But this:

map.getInfoWindow().open(marker, content);

throws this:

com.google.gwt.core.client.JavaScriptException: (TypeError): b is
undefined
fileName: http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/maps2.api/main.js
lineNumber: 1224
...

Has anyone got Info Windows opening over markers successfully?

Thanks,

John

[jd]

Solved by setting a infoWindowAnchor on the markers icon