DAVE 4.1.4 lost shortcuts and key bindings

I have used DAVE 3.1.x for a long time and now I have switched to 4.1.4 for the new project.
But the Eclipse part drives me crazy now.
The icons for BACK and FORWARD disappear and can't be brought back.
Sometimes after starting DAVE they are there, but (I guess) after switching the perspective to e.g. PINNING
they disappear.

Also the key binding for CTRL-H (search) does not work anymore. Sometimes after starting DAVE
it works, but then it refuses to.

These functions are my favorite ones and I really need them :-)

What is wrong with this DAVE or Eclipse version?
I reinstalled DAVE 4.1.4 even to a different folder, but the problem still exists.

What does DAVE (Eclipse) mean by "unavailable command group NULL" ?

Attachment 1892

Michael

Attached Images

• Perspective.jpg‎ (100.8 KB)