COSAC-Plus function is a web based object which is stored in browsers' cache directory. Before you start using COSAC-Plus, please follow the steps below to configure your Internet Explorer as prerequisite.
A. To set with at least 200M cache size and the setting for checking for newer versions must not be configured as "Never"
(Refer to screen capture illustrated as below)
B. To set the privacy setting as Medium or lower
C. To allow pop-up screen for hactl.com and COSAC-Plus
If you have problem starting up COSAC-Plus function, it could relate to memory cache problem at your PC. Please try the fixing procedure here