Knowledge Base / Legacy Products / Rockwell In-chassis / SLC / 3250 RTU

After I install and open ControlScape and open the app, I get an error that says "Serial Port Control Create Failed".

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Incorrect version of commx.ocx file installed on the PC. Delete the file named COMMX.OCX from your PC (this file is normally located in the C:WindowsSystem32 directory) and re-install Controlscape.