i got to sage website and found that the package were different from the first time, after compiling it and running it on a fedora 20 i got this :
Traceback (most recent call last): File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/src/bin/sage-ipython", line 10, in <module> from sage.repl.interpreter import SageTerminalApp File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/sage/repl/interpreter.py", line 218, in <module> from IPython.core.interactiveshell import InteractiveShell File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/__init__.py", line 47, in <module> from .core.application import Application File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/core/application.py", line 24, in <module> from IPython.core import release, crashhandler File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/core/crashhandler.py", line 28, in <module> from IPython.core import ultratb File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/core/ultratb.py", line 110, in <module> from IPython.core import debugger File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/core/debugger.py", line 36, in <module> from IPython.utils import PyColorize, ulinecache File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/utils/ulinecache.py", line 11, in <module> from IPython.utils import openpy File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python2.7/site-packages/IPython/utils/openpy.py", line 9, in <module> import io File "/math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib/python/io.py", line 51, in <module> import _io ImportError: /math/software/pkg/sage/64/sage-7.0-x86_64-Linux/local/lib64/python2.7/lib-dynload/_io.so: undefined symbol: _PyErr_ReplaceException -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.