Can not load modules

HI All,
after
aliBuild clean
it compiles well. But then after
alienv enter O2/latest-ctpdev-o2
I get:
CC-Toolchain(6):ERROR:105: Unable to locate a modulefile for ‘GCC-Toolchain/v10.2.0-alice2-6’
ROOT(6):ERROR:105: Unable to locate a modulefile for ‘ROOT/v6-20-08-alice1-105’
GEANT4_VMC(14):ERROR:105: Unable to locate a modulefile for ‘GEANT4_VMC/v5-3-39’

Roman.

after rm sw and recompile it works.