Ensure your USB or Parallel port dongle is unplugged before you begin the software installation.
Flexi 8.1 was designed for Windows XP and Vista. While it can run on Windows 7, 10, or 11, you will likely need to use Compatibility Mode . flexi 8.1 install
This usually means the Sentinel driver didn't install correctly or the dongle is in a USB 3.0 port (blue). Try moving the dongle to a USB 2.0 port (black). Ensure your USB or Parallel port dongle is
Choose your preferred language. The InstallShield Wizard will launch. Accept the License Agreement to proceed. Step 3: Choose Destination Folder if it’s closed
Ensure the "Production Manager" is open. In Flexi 8.1, the design software communicates with the cutter through the Production Manager; if it’s closed, the "Send" command will fail.