Issues with starting Kokua have been reported on some distributions that did not show up while testing the viewer on debian or ubuntu.
Slackware and Linux Mint 17 seem to be affected.
Slackware did not tolerate the absence of gridargs.dat.
Mint script commands did not interpret library paths.
Attached file kokua.txt at ticket #305 is a replacement ./kokua script. This is in a .txt file so it would be best to use as a guide to edit or copy/paste into
your live ./kokua script. The file is also in Files->Weekly on Sourceforge.
This change will be in the Weekly viewer downloads next week.