There is a known problem with the CVI installer that can cause the error you saw in a "multibyte" language operating system, such as your Korean OS. This error can error can happen if in the initial screen of the installation you enter multibyte characters in the "Name" or the "Company Name" fields.
If you did have this problem, the good news is that the installation did complete successfully (in spite of what the error message suggests). The error would have taken place in the stage of the installation that allows you to perform the online registration of the product, which does not have any great effect on the installed software.
You can verify whether it was successfully installed by checking the Start Menu and seeing if the shortcuts are present, and then yo
u can test them out.
As far as the SQL toolkit is concerned, you should know that 2.0.5 version of the toolkit does not support multibyte systems. There is a version coming out within weeks, version 2.0.6, which is multibyte system. It is a free upgrade to 2.0.5, and you should be able to use it in the Korean OS. Check the web site soon, for the upgrade notice.