No, absolutely no, since it is an .exe for windows to work on creating and fixing of the firmware. It's an application for the developers, so it isn't used by normal user, and few people usually use it, so it's very difficult someone notices a bug and reports it on a forum.
Maybe the permissions weren't included into source code so the application writes them at wrong offset. I would like to invite other developers here on forum as Evilnat aka nathanr3269 to work on it if it's the case.
Take consider this version has only a little bug, the previous version (tar_fix_v2 by TEAMSOS) is completely lopsided and doesn't work as it promised because it doesn't fix the values as it should do (the values assigned are incorrect). I hope cfwprophet fixes as soon as he can, since he is already busy with his tests and his hardware flasher on own ps3.