Textures broken, became low res

The 1.42 patch released today 28th Feb 17: I use the city texture pack and many non-block items' textures seem to have broken in that they are low res (like default texture). e.g. picks,swords, map icon, soup etc all look like they have lost the textures from the texture pack.

World seeds all read as 0 for all saves as well.

Block textures appear to be ok.