Today I installed clang_complete using Pathogen (i. e., I installed it as a submodule of my dotfiles git repository aka nesono-bin. I tried to be smart and went into the submodule’s directory and invoked make install. That nicely built the vimball and installed itself - but whenever I tried to open a cpp-file I got the following error:

"/tmp/sample.cpp" 10L, 144C
Error detected while processing function 15_ClangCompleteInit..15_initClangCompletePython:
line   29:
Traceback (most recent call last):
  File "", line 1, in 
  File "/Users/iss/nesono-bin/vim/bundle/clang_complete/plugin/libclang.py", line 63, in initClangComplete
    Config.set_compatibility_check(False)
  File "/Users/iss/nesono-bin/vim/plugin/clang/cindex.py", line 3126, in set_compatibility_check
    raise Exception("compatibility_check must be set before before " \
Exception: compatibility_check must be set before before using any other functionalities in libclang.
line   30:
E121: Undefined variable: l:res
E15: Invalid expression: l:res == 0

The error message was caused by the fact, that vim was loading clang_complete twice, as it was now installed in the bundle directory and in the plugin directory.
To fix this issue, I deleted all clang_complete related files:

bin/
doc/clang_complete.txt
doc/tags
plugin/clang/
plugin/clang_complete.vim
plugin/libclang.py
plugin/snippets/

Everything worked pretty fine from now on.
That’s it again
iss