java.lang.ArrayIndexOutOfBoundsException: 10

[qxzhou1010]

Hi, I am using your BigInt to implement a encryption algorithm. By testing, your BigInt has a better performance than BigInteger, so thanks for you creating a so excellent BigInt. But I occured one problem.
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 10 at com.zqx.ivhe.BigInt.subMag(BigInt.java:1153) at com.zqx.ivhe.BigInt.add(BigInt.java:1172)

I need to calcuate multiplication between a vector and a matrix, the size of them is (1025) (1025,1025). The element of the vector and matrix is a BigInt Object, and every element is a very big integer. I test for another vector and matrix with size of (65), (65,65) and successfully. But the size of them is (1025) (1025,1025) occur the above problem.
Please help me.
Thansk.