Looks soil too wet that cause it starts rotting and the leaves are soft and brown color. Too much watering. The soil is kept moist is the optimum level. I use perlite on wicking system to grow my avs.

I've gotten this before.

It could be too much light (sun).

I just got a plant from a vendor which looks similar. Their explanation ... too much sun.

Ashley,

If they are the older leaves, this is probably just natural aging. You should divide and re-pot all the crowns, with fresh soil and proper size pots. Remove the pale leaves when you do this and you should see new, healthy growth.

Linda