It seems like you're encountering an unexpected error. To help diagnose the issue, it would be useful to provide more details about the error message or the context in which it occurs. If possible, you could also share the project file or any relevant logs that might help in identifying the problem. You can email the project file to contact@esotericsoftware.com and describe how the error can be reproduced. This will assist in troubleshooting the issue more effectively.

Hi, it seems like you are using a very outdated launcher, please download the latest version from your personal license page.