IssueTracker

A KML file can fail to load for various reasons.  If the file does not exist then obviously us developers cannot cure that fault.  But at least some other causes for a failure to load might be curable at our end with code.  For example, if we knew that the reason that a KML file failed to load was because it exceeded the size/complexity limits, then one option for us might be to use server-side code (via XMLHTTP) to read the KML/KMZ, make a fusion table on-the-fly and then have the API use the fusion table to display the map.

If Google provided an informative error code when a KML file fails to load because it exceeded the size/complexity limits, then us developers could consider the fusion table option.