check initialized so autoloaded plugins happen first

autoload/airline/extensions.vim

@@ -129,7 +129,7 @@ function! airline#extensions#load()
     call airline#extensions#tagbar#init(s:ext)
   endif
 
-  if g:airline_enable_csv && exists(':Table')
+  if g:airline_enable_csv && (get(g:, 'loaded_csv', 0) || exists(':Table'))
     call airline#extensions#csv#init(s:ext)
   endif
 

plugin/airline.vim

@@ -83,13 +83,14 @@ function! s:airline_toggle()
   else
     let s:stl = &stl
     augroup airline
-    autocmd!
-    autocmd ColorScheme * call airline#reload_highlight()
-    autocmd WinEnter,BufWinEnter,FileType,BufUnload,ShellCmdPost *
-        \ call <sid>on_window_changed()
+      autocmd!
+      autocmd ColorScheme * call airline#reload_highlight()
+      autocmd WinEnter,BufWinEnter,FileType,BufUnload,ShellCmdPost *
+            \ call <sid>on_window_changed()
     augroup END
-    " update statusline now
-    call <sid>on_window_changed()
+    if s:airline_initialized
+      call <sid>on_window_changed()
+    endif
   endif
 endfunction