I just installed ozpost 3.6.0 (upgraded to 3.6.2) in an XAMPP test account (Windows 7, PHP 5.4.8, Zen Cart v1.5.3) and receive the following message when I attempt to install the shipping module:
Code:
Unable to create temporary files. ClickNSend will be non functional and you will be unable to enter product dimensions until this is rectified
Looking in my logs folder, I saw some log files and added a bit to the ozpost.php file to try to see what's going on:
Code:
[01-Aug-2014 22:47:20 Australia/Victoria] writeTempFile (C:\xampp\htdocs\zen_new\admin_name/, includes/modules/product/, collect_info.php): C:/xampp/htdocs/zen_new/cache/ozpost/C:\xampp\htdocs\zen_new\admin_name/ : C:/xampp/htdocs/zen_new/cache/ozpost/C:\xampp\htdocs\zen_new\adminsdoc/includes/modules/product/

[01-Aug-2014 22:47:20 Australia/Victoria] PHP Warning:  mkdir(): Invalid argument in C:\xampp\htdocs\zen_new\includes\modules\shipping\ozpost.php on line 3087
The part I added shows the parameters passed to the writeTempFile function, followed by the $cachefolder value, followed by the $myFolder value. You can see why mkdir was throwing a warning!

Any guidance would be much appreciated.