INST: fixed bug on installer
INST: fixed bug on installer

Former-commit-id: 23a598e4919dfda2bed8647773d4bb748d0f3553 [formerly 9a5090097d9c75faf33766ba606fe8f242ca7425]
Former-commit-id: 4f78938996a30bf206078b79c4b7b5e9443329f8
Former-commit-id: 45c585db4aece8c9ac5e604d5f446b09f4a876bf
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox