You have landed on this page because the game detected an error while attempting to start.
The issue occurs because the start menu failed to be initialized.
One way that this can happen is if mods are installed, and these break mandatory index files (for example the index/components.xml file) that the game requires to start up correctly.
If you don't have any mods then please Verify Game Data Integrity, or if using a different platform, try uninstalling and reinstalling the game.
If you don't use any mods, or are certain that the mods you are using/developing are not breaking an index file, and have verified your installation, please send a mail to firstname.lastname@example.org (Subject: Exitcode 1065). Add the crashdump file to your report and let us know of anything which you suspect may be triggering the problem for you. This page explains how to locate the crashdump file.