if you have ElecCore and Redstone Paste installed Redstone Paste fails to render.
im in the process of contacting FyberOptic also
https://www.dropbox.com/sh/z7kw3k0ozyu3bzm/AACEPzGVi3gijp31_1rkar8ma?dl=0

i have contacted FyberOptic on MCF and on twitter

Ahhh, was wondering what happened with my redstone paste. No I know.

fortunately it seems to only impack rendering