QIIME installation problem

[giugi]

Dear all,

I am trying to install QIIME on my PC but I have some problems.

I had to install python2.7 on usr/local/bin because on usr/bin there is the previous version 2.6. I set the PYTHONPATH in the .bashrc:

export PYTHONPATH=/usr/local/bin/:$PYTHONPATH
export PYTHONPATH=/usr/local/lib/:$PYTHONPATH

when  I run print_qiime_config.py I get this result:

System information
==================
         Platform:    linux2
   Python version:    2.7.3 (default, Dec 18 2012, 12:56:50)  [GCC 4.4.6 20120305 (Red Hat 4.4.6-4)]
Python executable:    /usr/local/bin/python2.7

Dependency versions
===================
                     PyCogent version:    1.5.3
                        NumPy version:    1.6.2
                   matplotlib version:    1.1.0
                  biom-format version:    1.0.0c
                QIIME library version:    1.5.0
                 QIIME script version:    1.5.0
        PyNAST version (if installed):    1.2
RDP Classifier version (if installed):    Not installed.

QIIME config values
===================
                     blastmat_dir:    None
                         sc_queue:    all.q
      topiaryexplorer_project_dir:    None
     pynast_template_alignment_fp:    None
                  cluster_jobs_fp:    None
pynast_template_alignment_blastdb:    None
assign_taxonomy_reference_seqs_fp:    None
                     torque_queue:    friendlyq
              qiime_test_data_dir:    None
   template_alignment_lanemask_fp:    None
                    jobs_to_start:    1
                cloud_environment:    False
                qiime_scripts_dir:    None
            denoiser_min_per_core:    50
                      working_dir:    None
                    python_exe_fp:    python
                         temp_dir:    /tmp/
                      blastall_fp:    blastall
                 seconds_to_sleep:    2
assign_taxonomy_id_to_taxonomy_fp:    None

So the Python exe is correct: Python executable:    /usr/local/bin/python2.7

However when I run  print_qiime_config.py -t I get this result (I only copy the Python message):

test_python_exe_fp (__main__.Qiime_config)
python_exe_fp is set to a working python env ... ok
test_python_supported_version (__main__.Qiime_config)
python is in path and version is supported ... FAIL

It seems to me that QIIME is still using python2.6 lib instead the python2.7.

If I run the all_tests.py i get this error message:

Traceback (most recent call last):
  File "all_tests.py", line 10, in <module>
    from qiime.util import (parse_command_line_parameters, get_options_lookup,
ImportError: No module named qiime.util

I really don't know how to solve it.....Have you got any suggestions?

Thanks

Giugi