Update: No need for it now. This was only for people who downloaded the rom on first day.
Those who are facing error 6 issue while flashing for now. I apologize that there was a small error in one of files. I am uploading that small file, download it and replace in that in zip. After flash it that zip. Follow these steps:
1) Download winrar and this Google Link Download
2) Install winrar.
3) Open A8_4.1.1_INCPak.zip in winrar and Double click META-INF folder,
2) Double click com folder.