Drummer tracks greyed, unavail / drummers missing

Suddenly I cannot use the drummer feature and I can't figure out why. When I start a new project the drummer track option is greyed and even when opening older projects the drummer track shows and is audible but I cannot see the "drummer", nor can I change "drummers", etc. This is very strange as nothing has changed on my system or software. If anybody has any thoughts or a fix I'd appreciate it very much.

I'm on a MacPro tower - Logic Pro X 10.0.4

screen shots of missing drummer and drummer track option greyed out

That's very strange.

Try updating to 10.0.6 first and see if it helps.

You could also try to trash the Logic Pro X preferences:

~/Library/Preferences/com.apple.logic10.plist

I have the same problem. However in my case this problem has been present from the start.

When I create a drumtrack in Logic I only get two empty 8 bar-regions and the editor is grated out.

The same thing with garage band.

I am on LP 10.0.6 and OSX 10.9.2

Tried deleting the suggested prefs, but to no avail...

When I create a drumtrack in Logic I only get two empty 8 bar-regions and the editor is grated out.

What if you click the background to deselect all regions, then select one of the Drummer regions?

When I create a drumtrack in Logic I only get two empty 8 bar-regions and the editor is grated out.

What if you click the background to deselect all regions, then select one of the Drummer regions?

When I do that, the ruler bar of the editor lights up, but the rest of the editor remains greyed out.

Thanks for reporting the solution Motam.

It's good to know that you can use this as a troubleshooting measure.