Unknown function: htmlcomplete#DetectOmniFlavor

Question

When I use vim to open one markdown file. i meet the following issue.

My Vim version is 7.4 and i use it on MacBook Pro with OS X Yosemite.

The following are the vim plugins i installed:

Anybody can help on this? many thanks:-)

---

Adding runtimepath

Answer 1

I got this error after I installed the Vim plugin YouCompleteMe. After I updated my html5.vim Vim plugin the issue disappeared for me.