I realised that I was trying to install advanced bionics instead of just bionic limbs. I also released that there wasn't a BionicsII research which is required to install Advanced bionics. So i went into ResearchProjects_Tech.xml and found the problem. The requirement for Bionics II requires Bionics II which should be Bionics I.
Edit: Still didn't allow me to install Advanced Bionic Limbs. Was able to research Bionics II and Advanced Bionics though
Edit: Still didn't allow me to install Advanced Bionic Limbs. Was able to research Bionics II and Advanced Bionics though