Error mesage

Hi,

I am getting the following error message when i run my program:

Code:

a.out in free(): error: page is already free Abort (core dumped)

I get this error after my program tries to read some parts of different binary files from a main input directory and append them appropriately to other output binary files in a main output directory which includes some other subdirectories as well. To explain the whole purpose of the program is a long story. I am very sorry if i am not clear here. I was wondering if anyone is aware of any general cases that this error message may show up?

Thank you,

Nina