I'm sorry to hear you're having trouble with Spine. Here are a few steps you can follow to resolve the issue:
Check for Antivirus Interference: Sometimes antivirus or anti-malware software can interfere with Spine. Make sure to check if any such software is blocking Spine from running.
Download Examples Manually: Since the new Spine Launcher does not include example projects by default, you can download them manually from the Spine Example Projects page. For older versions, you can find the examples on GitHub.
Reinstall the Latest Launcher: Ensure you have the latest version of the Spine launcher. You can download it from your license page and reinstall it. This might resolve any issues related to opening the application.
Check System Language: Sometimes the system language settings can cause issues. Make sure your system language is set correctly.
Spine Log: Check the Spine log for any errors. This can provide more insight into what might be going wrong. You can find more information on how to access the log in this related thread.
If these steps do not resolve the issue, please provide more details about your system setup, such as the operating system and any error messages you might be seeing.