help - why is this no work?!

[Shao Sean]

on mouseUp
   constant kData  = "M"
   constant k32    = 4294967296
   constant kPrime = 16777619
   local tHash     = 2166136261

   repeat for each byte tByte in kData
     put (tHash * kPrime) MOD k32 into tHash
     put tHash bitXor byteToNum(tByte) into tHash
   end repeat

   put format("%08s", baseConvert(tHash, 10, 16))
end mouseUp


gives me 0x050C5D6D
yet _EVERY_ program I use to compute the FNV1-32 hash gives me  
0x050C5D52 for the answer

The math is simple yet it is not giving the correct answer and I have  
wasted the last two and a half days on this.. *sigh*


http://isthe.com/chongo/tech/comp/fnv/