Some of the addresses have invalid street information. For example:
street: '7400 E. Hampden Ave #D',
street: 'www.iaai.com 409 West 66th Avenue ',
street: '1000 Englewood Parkway Englewood, CO 80110',
The street value sent to google cannot contain a web address or apartment number.
This may be contributing to the problem. It may be a bad address in the database causing the cache xml file to contain the dangling ta>
try deleting just the ta> at the end.
the other error is saying that the marker name "marker_0_" is not valid.
the marker name should contain a number at the end like "marker_0_4". The variable being used in the map php file is not getting a value for some reason. Please send a copy of the map php file so I can examine the code.