I was fiddling with various plasma themes, downloading some new, (trying to make panel use solid colour instead of eyecandy in KDE). then I lost all KDE applications, together with file associations.
using debian testing_amd64

how to repair it?
thanks.

I don't have a real solution but maybe a similar solution to a previous problem I had might work.

When I was very new to Linux (now I'm just new) I was using Ubuntu (Gnome) and decided to try out KDE.

After installing KDE my stuff in my menu got messed up. All Gnome and KDE applications were showing in the menu.

When I decided to remove KDE and just go back to Gnome I found what stuff to sudo apt-get remove and sudo apt-get install to get my Gnome back to original.

If you have access to a terminal with net access on your box maybe you can do the same.

Sorry but I don't know what to install, but a Google search should give you answers. Good luck.

qrange, I guess it's just a config problem? Try logging out of KDE to the login screen, then press ctrl-alt-F1 to get a virtual console; log in as your user on this tty and execute the following commands:

Then press ctrl-alt-F7 to go back to X and log into KDE with your user account. You will lose your current KDE settings but hopefully the problem will be gone.

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thanks odiseo, that worked like a charm. I have lost some settings, but that's no biggie.

Glad it worked. If you don't have some valuable setting related to KDE or KDE related programs, you can delete .kde.orig and .kderc.orig. But be careful since kde related programs store their settings inside ~/.kde, and in case you have valuable information on one of them (for example, the recipes in krecipes), you would lose it. So maybe the best idea is to wait a little bit until you're sure everything is working fine before deleting this directory (it doesn't harm keeping it, anyway).

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Regards.