adventurous
it works perfectly for me in windows and linux.
pathtofiles seems to be incorrect in your config file. pathTofiles should be set to an absolute path (according to
miniBB manual) like /var/www/html/yoursite/forum/ and then it will work.. but you can also set $pathToFiles variable anywhere on top of the mSpell.php file after the setup_options.php inclusion, like:
include '../setup_options.php';
$pathToFiles='../';
if you don't know or don't want to set the full system path to your miniBB forums folder for some reason.
thanks for your notes about the readme files, yes, i totally forgot the aspell.net people keep forgetting to tune their apache correctly for years now :) so yes the correct url to Aspell homepage is
http://aspell.net ..