Dear Sir, Thanks for your mail. I sent reply mail to srklsrsr@hotmail.com. Maybe you are using Windows 7. To use DVM-Pro 2010 in Win 7 you have to chang two settings as below. ************************** 1. UAC : User Account Control ************************** Steps to enable/Disable UAC in windows 7. 1) Please go to below path ; - Control Panel \ User Accounts and Family Safety \ User Accounts 2) Click on "Change User Account Control Settings" as shown in image "UAC_1.jpg" 3) In the dialog popped up ; Bring the SLider control to "never Notify" to disable UAC as shown in "UAC_2.jpg". -------------------------------------------------------------------------------- ******************************************************** 2. https://www.cadian.co.kr should be added to [Trusted sites] List. ******************************************************** You can add it as following steps. 1. Run Internet Explorer 2. Tools 1) [Internet Options...] Window 2) Security(2nd Tab) 3) Trusted sites 4) Sites... 5) [Trusted sites] Window 6) Add "https://www.cadian.co.kr" & OK. 7) Run DVM-Pro again. Thanks, CADian Soft