Restart game, try enter mission again, mission don't load, back geoscape.
Edit: Is the infamous [farm+]!
I m using last version I can find, same bug, map dont load, but dont remember the black hole, I think the hole come in the new version.
update UfoAI 2.4.0 2011.10.07 (1317990189)
Game update only
W2k support (Windows 2000)
no Admin right needed to install or uninstall
Will update any installation >= 1314405047
incl. alt-tab fix
ufoai-2.4-dev-Update-1314405047-to-1317990189-Debug-pentium3-O1-sse-7z-small-win32.exe
93.5 MB
3367e3992527339b5c6f601fc8fb2991
dc5d72e1cb8df68076ef63d4b381618b7cefcf1b