my default version of python is 2.7, but when I tried to run imp with this version I've got an error that numpy version is old. So I tried to use python 3.7 like this: 
setup_environment.sh python3.7 modeling.py
and I got this error: 

Traceback (most recent call last):
  File "modeling.py", line 21, in <module>
    import IMP.pmi.restraints.crosslinking
  File "/vol/sci/bio/bio3d/meravb/Programs/imp_build_cluster/lib/IMP/__init__.py", line 11, in <module>
    import _IMP_kernel
ImportError: /vol/sci/bio/bio3d/meravb/Programs/imp_build_cluster/lib/_IMP_kernel.so: wrong ELF class: ELFCLASS64

what can I do in order to run IMP properly.

Furthermore recently it takes very long time (hours) to build the IMP. Do you know why this has happened?