I'm using gVim with Vundle on Windows XP and 7. I have Unite.vim installed and I am trying to use the file_rec/async command to search for files. I've installed Vimproc.vim by executing the following commands:
cd .vim\bundle\vimproc.vim
make -f make_mingw32.mak
When I open gVim and enter the following in command mode:
:Unite file_rec/async
I get the following error:
[file_rec/async] async command : "" is not executable.
I'm author of unite.vim.
In Windows, you should not use file_rec/async source. It is too slow and not easy to use. You should use file_rec source instead.