brundlefly

icontakt

lfm
Many times I go and select a clip on header but nothing happends, other times trying to drag in header to move, nothing happends always either. 

 
I see these, too. Quite often.

Every time I've encountered that, it was because the Edit Filter was not set to Clips.

 
In my case, it's different. The Edift Filter is set to Clips as usual, I first select the clip by clicking the clip header or by lassoing the clip (and the clip turns gray), then if I click the header again and try to drag the clip to left/right, it wouldn't budge. Then, if I click elsewhere to deselect the clip and try to simply click and drag the clip (without selecting it first), it moves as expected. I can't for the life of me reproduce this in a new, blank project. The only possible scenario I can think of is that I mistakenly selected the clip and another clip positioned at bar 1 together. But the thing is, none of my projects contain audio/MIDI clips at bar 1.
 
There's actually another possibility. If the Now time marker is positioned over the clip and you click exactly on the white vertical bar and drag, the clip won't move, of course. But I don't think that's what I did.