Hi - Just picking up on the blog post http://www.silverstripe.org/archive/show/221139#post221139
Issue is the monthly archive links didn't work. The error was:
"Column 'Date' in where clause is ambiguous"

Fix is to change Date to `BlogEntry`.Date to identify the relevant posts.

Line 43 of BlogHolder.php

if(is_numeric($month) && is_numeric($month)){
$dateCheck = "AND `BlogEntry`.Date BETWEEN '$year-$month-1' AND '$year-$month-31'";
}
else if(isset($year)){
$dateCheck = "AND `BlogEntry`.Date BETWEEN '$year-1-1' AND '$year-12-31'";
}

Can thi sbe added to SVN release by someone