Geocoding error

[tolomaps]

I'm trying to geocode some locations in Colombia before creating a map in TileMill. After setting up the script just fine, then trying to geocode, I keep getting a pop-up that says "Oops. We're sorry. The server encountered an error. Please press "OK" to refresh the sheet."

Here's a link to the Google Spreadsheet: https://docs.google.com/spreadsheet/ccc?key=0Atrv3W0m5dcudFVjSW9nd0dCZEFCeXpYVE9PaHBEVnc#gid=0

To give you a little bit of background on the data - it's from sidih.colombiassh.org, a website run by UN OCHA that has a ton of data on Colombia, and contains data on conflict incidents from 2011. Please do not share this data with others, as I do not have permission to distribute it - am simply trying to solve this issue.

The pertinent columns are the last 4, with "Country" (Colombia), "Departamento" (equivalent of state level), "Municipio" (equivalent of county level), and "Lugar" (in this case, refers to a small town or neighborhood in a city). I've tried running it both with and without "Lugar," but it doesn't work either way. I used the Mapquest geocoding since it didn't require an API key.

Any thoughts on what's going on?