Might not be news but i have the donator client with Reis mini map, the inventory mod all the good stuff, and none of those mods seem to be working along with enderchests. Is this known?

I don't fully understand what you mean, please explain further....?

I cant open enderchests, nor can other members it seems, i also realize that the mods probably dont work because of the update.

InvTweaks has not updated to 1.4.6 yet. Rei's minimap has though, I use(d) both, and i'm currently using Rei's minimap along with a few other mods, enderchests work perfect for me, try removing some of the Inv mods you use one by one, and find the one causing the problems, and remove it. Also, if that doesn't work, It would help me a lot of you can get me a list of all mods you're using, I may be able to help more then.

All seems to be working well now except i literally lost every thing that was in my enderchest, a full set of diamond protection 4 armor, many picks enchanted and tools. very upsetting. Life goes on i suppose.

I would recommend making a pe, or posting in support forums about your loss, staff might be able to recover items, or refund them <object class="emojione" data="https://resources.enjin.com/1489581540/themes/core/images/emojione/svg/1f642.svg?0" type="image/svg+xml" standby=":)">:)</object>

Oh yeah, life goes on! Long after the thrill of livin' is gone.