Playing a private modpack and using 1.11.2-forge1.11.2-13.20.0.2259 on Minecraft 1.11.2 and found the followinf lines in the latest.log while troubleshooting another mod. Just thought I let you know.

[00:39:28] [Client thread/ERROR]: Using missing texture, unable to load techreborn:textures/blocks/machines/generators/semi_fluid_generator_top_on.png, java.io.FileNotFoundException
[00:39:41] [Client thread/ERROR]: Using missing texture, unable to load techreborn:textures/items/misc/missing_recipe.png, java.io.FileNotFoundException
[00:39:41] [Client thread/ERROR]: Using missing texture, unable to load techreborn:textures/blocks/machines/generators/semi_fluid_generator_bottom.png, java.io.FileNotFoundException
[00:39:42] [Client thread/ERROR]: Using missing texture, unable to load techreborn:textures/blocks/machines/generators/semi_fluid_generator_side_on.png, java.io.FileNotFoundException
[00:39:42] [Client thread/ERROR]: Using missing texture, unable to load techreborn:textures/items/cell_empty.png, java.io.FileNotFoundException
[00:39:43] [Client thread/ERROR]: Using missing texture, unable to load techreborn:textures/blocks/fluids/wolframium_flowing.png, java.io.FileNotFoundException