Give us a clear and concise description of the problem, and what you expect to happen

When I enter /omniCC version, I get the version number
when I enter /OmniCC, nothing happens, No Feedback

Screenshots can help quite a bit.

Do you have any steps to reproduce this issue?

The best way for us to fix an issue is to know how to reproduce it.

Are you getting any error messages?

no Error messages

World of Warcraft disables errors by default. Install BugSack or addon error messages via /console scriptErrors 1 and reload the game. If an error window appears, write here the first message (labelled 1/Many) that appeared. If you're getting especially low FPS, it probably means that you're getting a bunch of errors that are hidden.

What version of OmniCC are you running?

10.1.2

You can get this via the slash command /omnicc version. If you're not running the latest release, please try that version first.

What version of World of Warcraft are you on?

Retail current
You can get this via the command, /dump GetBuildInfo().

What other addons are you running?

Lot of times, OmniCC issues are AddOn specific.