tab. Check "Run this program in compatibility mode for" and select Windows XP (Service Pack 3) Run as Admin : In the same Compatibility tab, check Run this program as an administrator Missing DLLs : If you get a "hardware key not found" error, ensure the Sentinel Protection Installer (version 7.6.9 or similar) is updated. ThinkSAi.com 🏗️ Production Manager Setup Production Manager from your desktop or the Flexi program group. menu and select Choose your cutter/plotter manufacturer from the list. Select the correct (usually a COM port or USB). Check your Device Manager to see which COM port your plotter is using. If you run into issues, could you tell me: Are you getting a specific error message (like "no hardware key found")? version of Windows are you using? Are you using a physical USB dongle or a software-only version? Installing Flexi Complete Guide
Here is the "story" of a typical installation process, designed to help you navigate the setup of this classic sign-making software. The Setup: Preparing the Ground flexi 8.1 install
This is very common on Windows 10/11.