An alert box in a page capture is corrupted

Doing following operations after installing or upgrading Vex may occar corrupting alert box in a page capture.
・Internet Explorer upgraded
・the style used by the OS was changed (to the classic display, etc.)
Images can be acquired again by the following procedure.

＜Procedure＞
1. Stop Vex using the Vex controller.
2. Start the command prompt as the administrator.
3. Go to "[Path where VEX program is installed]/Jabberwock/WEB-INF/" and execute 'vex_maintenance.bat'.
4. Enter 1 in the command prompt screen and click Enter.
5. After the process is completed, start up VEX.