Now that you have shown us the problem (Manage palette thinks there is an error, whereas there is no error shown in the log) I will see if I can replicate the problem.
Manage pallete is complete different menu, it is legal to call my screen Dependency manager and I think completely wrong to call it "Manage pallete" because it has own menu item.
Sorry, seems I forget to mention project in first message. I think I will add more screenshots if I init topic again
Yes, you are right, it is not Manage Palette, what it should be called I don't know as I don't use projects. I have tried to replicate the problem in a non-projects environment but I don't see any problem there, so I think you will need someone who uses projects and NR 4 to have a look.