I think after u install more than 1-3 kits on bg1 there is no room to add a new line on the 25tweap.2da or wtf its called. So the mindflayer kit was installed there before my other kits, so i dident get a issue from that, rather later when i installed other kits. But its not an issue for me atm, it works nice without adding that to the gameI think there was a point in the old days that exceeding a set amount of vertical rows in the .2da table made the table not work anymore. Now I think it was 'fixed' so the game can exceed the number. And the compiler just freaks for nothing. As the rows should work still.
Anyways, the Thief generalist usability flag is: ~0x00004000 4~
Yes, i noticed the kit was added to the list even with the fault comming up ;d
Thanks 
I had been using Blade's one, with a zero to little in the start
It is now changed, re-installed. But there is still an issue at same place. When clicking "skills" at character creation the game crashes in bg2, not in bg1.
Ill take a copy of parts involving that and also upload the kit 
Profience(the description shows a little fault on internet appart from the notepad):
// This are the proficiency in BG1 style, don't bother with them.
~GELKITNA 1 1 1 1 1 1 1 1~
// This are the BG2 proficiencies, pay attention here, use the 2DA table "WEAPPROF"
// and look into the column n1 for the order they are displayed in. This is appended column-wise.
//WEAPPROF.2DA
//11 T S F Q S S
//10 W C L U W I
//9 BG1p- *B L S O I W A A O N
//8 roffs *A O H H M A I R C S R G
//7 L S ' M*S N O A I R H L T R L H 2 D L 2 E E E E E E E E E E E
//6 _ _ S I*T G R N K T D H A M E O O O H A E W E E E E E E E E X X X X X X X X X X X
//5 S S S B P S*A S T D A A A A S L O R S N R S A N W E X X X X X X X X T T T T T T T T T T T
//4 W W P L I S*R W S E T R G M C P B R M S S G T D L N D E A T T T T T T T T R R R R R R R R R R R
//3 O O B E U K A I*D O W A D A W G M L E E N A T B B B A I D S A P R R R R R R R R A A A A A A A A A A A
//2 R R O A N E X L*S R O X S N A E E U A R I C A O O O R N E H P O A A A A A A A A 1 1 1 1 1 1 1 1 1 1 2
//1 D D W R T D E E*W D R E W A K R R B R D N E F W W W T G D I O N 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
~GELKITNA 2 2 1 0 0 0 0 1 1 1 2 0 0 2 2 1 0 0 0 0 0 0 0 1 0 2 1 0 2 1 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0~
// minimum stats for the kit. Use low values, otherwise it will be too easy to roll high stats.
~GELKITNA 14 17 13 9 9 4~
Usability flag:
// this is the usability flag for the class followed by the class number
// (see the table KITLIST.2DA for more information)
~0x00004000 4~
Thieving skills:
// the number of weapon slot that are displayed in the inventory
numwslot = ~4~
// 1st value is the amount of Thieving skills point gained at level one and the 2nd is the amount gained in the following levels.
thiefskl = ~40 30~
// maximum amount of traps this kit can set (this is optional and only for Thief and Bard kits)
traplimt = 7 (does there miss ~~ here?)
// this is the BONUS that is given to each kit/class' thieving abilities at level 1
// appended column-wise to CLASISKL.2DA
// note that they are 7 values, Pick Pockets, Open Locks, Find Traps
// Move Silently, Hide in Shadows, Detect Illusion and Set Traps
clasiskl = ~10 10 10 10 10 10 10~
// this is appended column-wise to THIEFSCL.2DA, 100 determines that the player can spent Thieving Points
// in that thieving ability, and 0 means that they can't.
// Seems like it has something to do with percentages, but it's not confirmed yet.
thiefscl = ~100 100 100 100 100 100 100 100~
Kit:
Now roundstealing amn for items etc ;d But can't seem to steal sword of fire +1 
