Dear Chimera's users! I need to model some missing segments ( In particular case I need to build missing N and C termi ) of my protein ussing Modeller's options. Could you tell me about possible solution of that issue ? On my win7 I have installed Chimera as well as Modeller v 9.10 suite. I've defined Modeller pathways in the Chimera's Model pool options but when I've selected option Prune seection to define region of interest I didnt obtain anythinf from both of Chimera or Modeller. On other hand the option Structure -> Modeller tools also not available for me. Does it means that I've installed modeller incorrectly ? Also I've used runmod.dat script with defined variables from which I obtained the below C:\Users\own\Desktop\worktemp>runmod.bat usage: mod9.10 script [...] Doest this means that all work fine ? By the way after executing of that script I could not launch modeller by means of mod9.10.exe from modeller folder. The error from modeller was C:\Program Files\Modeller\bin>mod9.10.exe FATAL ERROR: MODINSTALL9v10 environment variable not set: incomplete MODELLER in stallation Could you explain me whats I've done wrong and how I could fix this problem? Thanks for help Gleb