Check to make sure your host server is using PHP 5 – it looks like some recent changes require it for remote posting.
Most hosts allow you to use PHP 5, but they default to PHP 4. To force the server to use PHP 5 add these two lines to your .htaccess file:
AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php
This resolved my issue, I hope it might also be what is causing your problems.
I was having the same problem. I got an email from my host tech support in blazing time. It seems this is a problem with most services defaulting to PHP 4.
The recommendation was to use the .htaccess file to force the server to run PHP 5 when reading and accessing the pages. Two lines of code need to be added.
AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php
This fixed my problem. Hopefully others who are having this problem will be helped as well.
