I've lost the transform widget

I’ve been working for some time in a blend. First I worked in 2.42 and since the release of 2.43 I’ve worked with the new version.
Today, suddenly, I’ve lost the ability to activate the transform manipulator in this blend. In other blends it works ok.
Any idea?
Thanks in advance.

My blame!
I had the pivot around the 3D cursor and the cursor very far away, so I didn’t see the manipulator.