Thank you for your reply. Let me detail my question once again. I installed DSC add-ons in the pc with administrator account. And everything is fine when I use this admnistrrator account. But when other common users try to use those "standard" existing sub-vis related to the DSC, such like "Write Tag(Analog)", I mean when they try to open that file, they are asked to locate some other sub-vis and dll files, actually the users could not find those files, and if they click "cancel" instead of "yes" in the pop-up window, for all the "locating file" prompts, they will finally get that desired sub-vi with broken arrow on it, of course the broken arrow means there are some missing related sub-vis inside.
But if using administrator account, this problem never h
appens.