Hi, I am experiencing the same problem. After adding 'MCMA' to build/gnu/pref.dat, I tried doing what John did (removig exec and lib). Problem is install.com does not produce the charmm executable afterwards. I also tried deleting build/gnu/Makefile_gnu and build/gnu/Makefile (as suggested in the thread on reinstallation), but the charmm executable is still not produced.

Can someone help me please?

Abdul-Rashid B. Sampaco III