Hi all, I'm currently running openSUSE Leap 42.1 with Plasma 5.4.
There's some problems for with Dolphin and also the Application Laucnher with displaying certain icons , for instance with .sql and .docx file types (They appear empty in Dolphin an with a default "page" icon in the Application launcher.
Their correspondent mime types are application-sql and application-wps-office.docx.

However this do not happen when opening with another program, let's say Kate.

Here's some screenshots from Dolphin:
http://i.imgur.com/JehDmZF.png
http://i.imgur.com/ykZjHTO.png
http://i.imgur.com/F2U84Xm.png
http://i.imgur.com/CuYN82A.png

Here's a screenshot from Kate:
http://i.imgur.com/4JQp6XJ.png

Any clue?

Ok, I made a mistake I forgot to restart Dolphin. Now the icons are displayed fine.
Other problem was that .sql file type hadn't an default icon assigned.
I think this thread can be closed.

Please mark this topic as solved (using the "accept this answer" icon) if so, thanks!