Server crashes on startup when trying to spawn temporary spawns

[OldTimeDev]

I've had my AL v2.5 server running for some time, but all of a sudden it crashes on startup now, with the following error:

11:14:42.560 INFO [main]: - Spawned houses 710010000 [1] : 500
11:14:42.560 INFO [main]: - Spawned 710020000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900020000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900030000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900100000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900110000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900120000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900130000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 900140000 [1] : 0
11:14:42.560 INFO [main]: - Spawned 990010110 [1] : 0
11:14:42.575 INFO [main]: - Loaded 91425 npc spawns
11:14:42.575 INFO [main]: - Loaded 19490 gatherable spawns
11:14:42.638 ERROR[main]: - Critical Error - Thread: main terminated abnormaly: java.lang.NullPointerException
java.lang.NullPointerException: null
        at com.aionemu.gameserver.model.templates.spawns.TemporarySpawn.getTime(TemporarySpawn.java:68) ~[AL-Game.jar:na]
        at com.aionemu.gameserver.model.templates.spawns.TemporarySpawn.geSpawnHour(TemporarySpawn.java:44) ~[AL-Game.jar:na]
        at com.aionemu.gameserver.model.templates.spawns.TemporarySpawn.canSpawn(TemporarySpawn.java:93) ~[AL-Game.jar:na]
        at com.aionemu.gameserver.spawnengine.TemporarySpawnEngine.spawn(TemporarySpawnEngine.java:88) ~[AL-Game.jar:na]
        at com.aionemu.gameserver.spawnengine.TemporarySpawnEngine.spawnAll(TemporarySpawnEngine.java:39) ~[AL-Game.jar:na]
        at com.aionemu.gameserver.GameServer.main(GameServer.java:217) ~[AL-Game.jar:na]

I've looked at the code where it is crashing, and obviously the temporarySpawn object it is trying to query is NULL. What I can't figure out is why it started barfing all of a sudden as I haven't changed anything on the server. I'm assuming it's failing to read something from data/static_data/spawns but I have yet to find exactly what is failing.

If anyone has encountered a similar error and managed to fix it, some pointers in the right direction would be really handy.
Thanks

Update:
I did find a reference to this same problem over here http://forum.ragezone.com/f587/relea...9/#post7830979
However no solution was posted so I don't know if it was ever solved.

[MentaL]

[OldTimeDev]

Okay, I fixed it, but it was rather odd.

About a week or so before the crash started happening I had attempted to make a change to the [Group] Cleansing the Temple quest in the quest_data.xml. Some of the mobs listed for you to kill for that quest don't exist so I tried putting in the ones that did. My changes didn't fix the quest, but it didn't make the server crash either, at least not right away. It was about a week later when it started to crash so I didn't connect the changes I had made to the problem. Only after doing a lengthy manual diff between all of the data files in the original download and what I was running did I find that modification and changed it back to the original, which ended up fixing the problem.

So let that be a lesson to me: take caution when messing with the data