Hi Chris
You've installed the LV RTE. That's fine. You mentioned that you use the DCT. Have you included the support files for the DCT when building the executable?
I've copied this from the readme file of the DCT:
"When you use components from the Database Connectivity Toolset to build a stand-alone application or a DLL with the Application Builder, you must install MDAC to the target computer if it is not already installed along with the appropriate support files. A build script is included in the Database Connectivity Toolset to help you include all these components. Refer to chapter 6 of the Database Connectivity Toolset User Manual for more information."
Hope this helps
Luca
Regards,
Luca