[Help] "Can't find prefab 'researchlab2'"

[halfrose]

I modded a new techtree into a mod

and apparently now it can't find the actual alchemy and science machine, while the new custom tech tree works fine

this is the lua for the new tech tree: 
and the prefab of the new tech: 

here it is the log:

I assume it is something minimal my eyes are not catching.

EDIT: After looking for all solutions, I couldn't find the issue on the files, and then, I realized and found the error, there was a 'ghost' file of the science prototyper in my mod, which was invisible, how it got there is still a question but that solved.

Edited November 4, 2016 by halfrose
Solved,