Cannot Close Tickets

I am using AISO's WHMCS/Kayako integration and have encountered some issues with sending PUT requests to the api. GET and POST seem to work fine, since I can browse and submit tickets from outside of Kayako. But when the "Close" button is pushed (which uses the PUT method) nothing happens. I have attempted to enable PUT via htaccess:

<Limit GET POST PUT DELETE>
order allow, deny
allow from all
</Limit>
Unfortunately this doesn't do anything to help. Has anyone come across this issue when attempting to send PUT requests to the Kayako API? Could this issue stem from the fact that we are running Kayako in trial mode during testing?
Thanks

I'm having the same issue with the PHP API class. The error being returned from Kayako is that no salt is provided.

Try experimenting with

PHP:

$config->setControllerAsQuery(false);