What has changed in the newest version

I think I found the problem, at least one of them.
A guy named DaHooplerzMan send a PM telling that when the texture is zipped, 2 texture folders are being created.

assets/minecraft/textures/textures/[files] instead of assets/minecraft/textures/[files]

Let’ fix that

edit: it should work now.
And clear your cache to force the browser get the last updates.