[R] read.zoo problems

[KTD Services]

I am having trouble importing a zoo object after writing it.  When I  
try to import using read.zoo, I get the following error:

Error in read.zoo(data_location) : index contains NAs

But when I inspect the file I don't have any NAs

A sample data (.txt 2KB) can be downloaded at: http://www.mediafire.com/?29dqndxf2do9m9e

Thanks for the help,

Joe