Strange Problem

[SilverFire]

So i'm running TrinityCore latest db/core, everything works fine. The only problem is that almost any modification I make in the db makes me unable to start it again. Let me explain:
So everything is working fine, i decide i want all the horde characters to start in winterspring and all of the alliance chars to start in darskshore. I proceed in .gps'ing at the place where i want alli to start, go in db -> world -> playercreateinfo, i don't touch the race/class stuff only the coords. After 10 minutes of work i restart the server and i get this error:

2010-09-07 21:00:46 Using configuration file worldserver.conf.
2010-09-07 21:00:46 TrinityCore Rev: 9783 Release Hash: 64ad9ad59b22 (Win32,little-endian) (core-daemon)
2010-09-07 21:00:46 <Ctrl-C> to stop.

2010-09-07 21:00:46  ______                       __
2010-09-07 21:00:46 /\__  _\       __          __/\ \__
2010-09-07 21:00:46 \/_/\ \/ _ __ /\_\    ___ /\_\ \ ,_\  __  __
2010-09-07 21:00:46    \ \ \/\`'__\/\ \ /' _ `\/\ \ \ \/ /\ \/\ \
2010-09-07 21:00:46     \ \ \ \ \/ \ \ \/\ \/\ \ \ \ \ \_\ \ \_\ \
2010-09-07 21:00:46      \ \_\ \_\  \ \_\ \_\ \_\ \_\ \__\\/`____ \
2010-09-07 21:00:46       \/_/\/_/   \/_/\/_/\/_/\/_/\/__/ `/___/> \
2010-09-07 21:00:46                                  C O R E  /\___/
2010-09-07 21:00:46 http://TrinityCore.org                    \/__/

2010-09-07 21:00:50 Realm running as realm ID 1
2010-09-07 21:00:50 Using World DB: TDB 335.10.33
2010-09-07 21:00:50 Using creature EventAI: ACID 3.0.4 - Final Release for Trinity (3.3.2 Client)
2010-09-07 21:00:50 Will clear `logs` table of entries older than 1209600 seconds every 10 minutes.
2010-09-07 21:00:50 Using DataDir ./
2010-09-07 21:00:50 WORLD: VMap support included. LineOfSight:1, getHeight:1
2010-09-07 21:00:50 WORLD: VMap data directory is: ./vmaps
2010-09-07 21:00:50 WORLD: VMap config keys are: vmap.enableLOS, vmap.enableHeight, vmap.ignoreMapIds, vmap.ignoreSpellIds
2010-09-07 21:00:50 
2010-09-07 21:00:50 Loading Trinity strings...
2010-09-07 21:00:50 
2010-09-07 21:00:50 >> Loaded 860 Trinity strings from table trinity_string
2010-09-07 21:00:50 Initialize data stores...
2010-09-07 21:00:50 
2010-09-07 21:00:50 >> Initialized 89 data stores
2010-09-07 21:00:50 Using enUS DBC Locale as default. All available DBC locales: enUS 
2010-09-07 21:00:50 
2010-09-07 21:00:50 Loading Script Names...
2010-09-07 21:00:50 
2010-09-07 21:00:50 ERROR: >> Loaded empty set of Script Names!
2010-09-07 21:00:50 Loading Instance Template...
2010-09-07 21:00:50 ERROR: Error in instance_template table, probably sql file format was updated (there should be 8 fields in sql).

this happened to me after I cleared the creature_template table also. I had to reinstall the db. What i find weird is that i don't get an error from playercreateinfo, the table i modified, but I always get from this instance_template table.