Originally Posted by wp9omp
In menu.json in line 9 at column 109 there is a comma:
...lugin.sh", "params": "0"},
This causes Kual to stop parsing the file (expected <item>, but found ']' - or something similar).
I deleted the the comma, and Gnash appeared in Kual.
I know my answer is a bit late, but thanks anyway! I didn't notice it earlier.
I corrected package on my website.