undefined symbol: panda_version_1_7_0

When i run my game i get this:

Traceback (most recent call last):
  File "s.py", line 7, in <module>
    from pandac.PandaModules import loadPrcFile
  File "/usr/share/panda3d/pandac/PandaModules.py", line 2, in <module>
    from libpandaexpressModules import *
  File "/usr/share/panda3d/pandac/libpandaexpressModules.py", line 1, in <module>
    from extension_native_helpers import *
  File "/usr/share/panda3d/pandac/extension_native_helpers.py", line 81, in <module>
    Dtool_PreloadDLL("libpandaexpress")
  File "/usr/share/panda3d/pandac/extension_native_helpers.py", line 79, in Dtool_PreloadDLL
    imp.load_dynamic(module, pathname)
ImportError: /usr/lib64/panda3d/libpandaexpress.so: undefined symbol: panda_version_1_7_0

This is on ubuntu 64 bit linux.

I have reinstalled the deb packadge from the repo.

This usually means that multiple versions of Panda3D are somehow conflicting.