| Error Message | Likely Cause | Fix | |----------------|--------------|------| | “Invalid activation key” | Typo, wrong version, or used key | Re-check, re-type, or contact support | | “Activation limit exceeded” | Key used on too many PCs | Deactivate on old PC first (Help → Deactivate) | | “No internet connection” | Firewall blocking SketchCut | Allow app in Windows Defender / macOS firewall | | “Installation failed – error 1603” | Corrupt installer or permissions | Clean temporary files, run installer as admin | | “Cutting plotter not found” after install | Driver not installed | Go to Device Manager → Update driver for USB device |
If you prefer a visual guide, here’s a written script for a step-by-step video: sketchcut lite activation key install
If your device lacks an internet connection, you may need to submit a Site Code to the developer to receive a manual activation key for validation. | Error Message | Likely Cause | Fix