Last time I will say this to you lot that keep saying "The link does not work", "403 Error - 1.8 Dropbox error", "Can you fix the mod", and etc. The mod creator has not been on in a long time and has apparently given up on this mod. Stop posting in this thread and let it just die. Hopefully one day someone will come along and create a new damage indicators mod so we can all have it again, but for now, get use to not having it unless you have it from before the mod creator left or using it in modpacks.
Also, if a mod/admin would be so kind as to lock this to keep others from posting in it, it would make the rest of the community happy since the person that created this mod can simple just create a new thread if he/she returns with a new version of the mod. Thank you.