Ensure your graphics and chipset drivers are up to date to support the new UI rendering engine. Conclusion
Your local development folder and a network drive contain similar but not identical files. Solution: bcsoft 4.0 software download
Using a key for BCSoft 3.x with version 4.0. Fix: Log into your Scooter Software account and generate a new key for v4.x. Upgrades from v3 to v4 require a paid upgrade fee (usually 50% of new license). Ensure your graphics and chipset drivers are up
Sometimes aggressive firewalls flag new installers. Temporarily whitelist the BCSoft downloader. bcsoft 4.0 software download