From MCF:

Hi. I'm having a minor issue. I'm using the latest version of this (1.7.10 beta.2) with the current latest Pam's Harvestcraft and I'm unable to craft fresh milk. I put the bucket of milk in any crafting grid and get nothing. If I check NEI for the recipe for fresh milk it shows pink and black squares instead of a bucket of milk. Both the actual bucket I get from milking a cow and the one shown in the dysfunctional recipe have the same ID number. Over at Pam's thread she said the fix would be on your end. I'm using Forge 1226 at the moment, though the problem was discovered while using Forge 1208.

Yes, I tested with Pam's mod installed along side HO, and with just Pam's mod. Without HO the milk crafts correctly into fresh milk. With HO installed it does not. When I check the recipe in NEI the bucket of milk in the fresh milk recipe is just black and purple squares. Removing HO is the only change I made to have it working again.

No clue how HO could be causing this.

this isn't HO its MFR
those users need to disable the registry hacks on milk buckets

need to get mods list from user

I'm not the user Squeek referred to but I have got Hrvestcraft 1.7.10c. I'm seeing the missing texture for milk (in some circumstances) but I am able to craft fresh milk.
I'm also using MFR with:
(If true, replaces the vanilla milk bucket so milk can be placed in the world.)
B:MilkBucket=true
I'm about to change that to false as I can't place the milk bucket anyway. No point in keeping it true.

..I hope you don't mind the pics. I'm hoping they'll lessen confusion. My mods list and configs are here

Crafting milk to fresh milk

Textures for milk showing correctly

Missing texture for milk in some recipes

the missing texture in the cake recipe is MFR that is bugged

Closing this. Feel free to comment or create a new issue if it's reproducible without MFR.