I ever encuntered similar problem,if you set back your OS time, when you open Maple, Maple will pop up message "Invalid Purchase Code...".

Hello,

I have introduced these function on my recent WebEX webinar MapleSim试用培训 （中文）.

You can download recorded vedio and presentation document using the below link.
http://www.cybernet.sh.cn/download/MapleSim试用培训网络会议.rar

Junlin
Engineering/MBD Division
Cybernet Systems (Shanghai) CO., LTD.

Solution： Copy the font files from a Xp or 32bit win7 OS to yout 64bit win7 OS.

Validated Solution: Copy the fonts files from Xp OS to my 64bit win7 OS.

这个问题是由于 64位 Windows 7 家庭版系统自带字体引起的.

解决方法：找一台xp或32bit操作系统的机器，将C:/windows/font/文件夹下的文件拷贝过来，就ok了。