Update NexEngine to the latest build! Do backup of your /arenas/ folder!
[Added]EliteMobs integration.
[Improved] Region wave spawn triggers now accept all other triggers too! Not only WAVE_START one. Just be careful when using them, you may easily result in infinite mob spawning . [Improved] Players on the arena now dies naturally instead of death-simulating. This should fix various broken integrations with other plugins. [Improved] Players joined the arena during the game now have to set their status as 'ready' to join the game on a next wave.
[Changed] Wave amplifiers are bound to the whole arena now rather than to arena waves. This should make amplifier setup more simplier. You can create a few amplifiers and then simply specify them to waves you want them have effect for. All your current amplifiers will be auto-converted. Make sure to validate your wave amplifier settings. [Changed] In arena waves editor, you have to select the mob provider now (AMA / MythicMobs / EliteMobs). This should make things more clear.
[Fixed] A bug, where mobs can be spawned when the game is about to finish. [Fixed] A bug, where some mobs become babies when should be adult. [Fixed] Overall code fixes and improvements.