Randomize Transform is not available I wanted to use the "Randomize Transform" tool as described here

Or in the first half of that video.

Following the video, after seperation of each individual cube into single objects, when I want to use the tool, everything is greyed out, like in the attached screenshot.



What am I doing wrong here?
Make sure Global Undo is enabled.
For 2.8x and 2.9.
Edit &gt; User preferences &gt; System &gt; Memory &amp; Limits: Global Undo


For 2.79 use
CtrlAltU &gt; User preferences &gt; Editing &gt; Undo:


That panel is called the redo panel, because when you change a setting on it, blender actually redoes the previous operator with the new settings.
If blender can't undo the previous operator first, running it again will add it's effect on top of the result of the previous operator (which is not the desired effect at all).
So this panel is disabled when undo is not available.