I am unable to open Okular or Ark on my computer. (Arch 32-bit, KDE 4.8 )

When I try opening Okular, I get a dialog that says "Unable to find the Okular component" and then get a completely blank Okular window. When I try opening Ark, I get a similar dialog that says "Unable to find Ark's KPart component, please check your installation." Neither prints any messages when opened in a terminal.

sounds like you are missing some libraries, did it used to work and did you recently do an upgrade?

Hah, yeah... alright, what happened here... I had been previously trying out Parabola GNU/Linux on this system, and when I switched back to regular Arch I forgot to switch one package... kdelibs-libre was still installed on my system rather than kdelibs. Didn't realize it until I upgraded to 4.8.1 and everything broke.

But yeah, evidently that was the problem as both programs now work just fine.

Hi i am using mac and just finished installing (actually twice) kde4 on my computer. i want to use kile as tex editor . everything worked fine except when i try to run ocular it says "unable to find okular component".. i checked again and again every time same problem. i am using kde 4.11.1

Thanks.

How did you install Kile and Okular?
Does Kile function correctly?

I did with macports . everything works perfect except ocular .. Kile works fine

Can you please run "kbuildsycoca4 --noincremental" in a terminal, then try starting Okular again?

I tried but result is still same...

is poppler installed? "okular component" could (operative word is "could") mean that poppler is not installed

poppler is what does the actual pdf rendering

If installing Poppler does not correct the issue, can you provide a screenshot of the error message Okular gives you?

it says that "unable to find ocular component". I checked and reinstalled poppler using these steps
sudo port clean okular
sudo port install poppler +qt4 +quartz
sudo port install okular
sudo port -v install kde4-kile
and checked but it still says that "unable to find ocular component".

Hi .. I fixed the prob thanks for ur help and support .
i repeated the whole process again and this time it worked.
again thanks

Not a problem. It is likely that the subsequent build of Okular included Poppler support - which your original build was missing.