Minecraft Forums

I know that there are other post about this and I have tried what they suggest, however I still get the error message...Let me explain:
IllegalArgumentException: Slot 201 is already occupied by [email protected] when adding [email protected]
So I go into config file and :
#CastleStoneID (int:201,>=0.0,<=255.0)
#CastleRockID (int:202,>=0.0,<=255.0)
#FrostedGlassID (int:203,>=0.0,<=255.0)
#TentID (int:204,>=0.0,<=255.0)
#TentBlockID (int:205,>=0.0,<=255.0)
#DrawBridgeID (int:206,>=0.0,<=255.0)
#CastleGlassID (int:207,>=0.0,<=255.0)
#PrayerID (int:208,>=0.0,<=255.0)
#LanternID (int:209,>=0.0,<=255.0)
#CopperOreID (int:210,>=0.0,<=255.0)
#HayID (int:211,>=0.0,<=255.0)
#GemBlockID (int:212,>=0.0,<=255.0)
#WallID (int:213,>=0.0,<=255.0)
#
#Fri Sep 07 15:41:38 CDT 2012
CopperOreID=210
TentID=204
WallID=213
FrostedGlassID=203
HayID=211
CastleRockID=202
CastleGlassID=207
CastleStoneID=201
TentBlockID=205
GemBlockID=212
checksum=22r
LanternID=209
PrayerID=208
DrawBridgeID=206
So I change CastleStoneID to something else..save...and still get the error message.
What am I doing wrong.
I have tried a fresh install
I think I am conflicting with BTW but my wifes machine has both installled and no issues.