If you have installed the Basic version and wish to upgrade to Designer capabilities:
Before attempting to download or install Version 3.8, ensure your PC meets the minimum requirements. Note that this version was designed for older operating systems, which may require compatibility settings on modern PCs.
Step 1: Prepare the Environment
Step 2: Run the Installer
Step 3: Follow the Wizard
Step 4: Driver Installation
Step 5: Finish
Legacy users often search for version 3.8 because:
| Issue | Likely Fix |
| :--- | :--- |
| "No communication with meter" | Update IR-USB cable driver via Device Manager. Uninstall generic COM port driver. |
| Forms Designer grayed out | You are running in Viewer mode. Re-enter Plus Designer license key under Help > License. |
| Crash on Windows 11 | Use Windows 7 SP2 compatibility + Disable fullscreen optimizations. |
| Missing OCX or DLL errors | Run the installer again as Admin. The setup likely failed to register controls like mscomctl.ocx – manually register using regsvr32 from an Admin CMD. | flukeview forms plus designer 3.8 download