Other Dolphin file manager in wmaker -- null pixmap

[Nicola Mingotti]

Hi,

I just installed FreeBSD 11.2 in a new Dell Laptop, I have problem with Dolphin.

If i run it using KDE window manager it works without any problems.
If i try to run it in wmaker window manager it gives a lot of errors :
-----
QPixmap::scaled: Pixmap is a null pixmap
-----

It can not find the icons, but the error message is to vague for me to
able to fix it.

Do you have any idea how to do it ?

bye
Nicola