Blank Install Updates Window

[DenW]

Hi Jerry:  I did a regular update yesterday and it showed updates in window, so I proceeded without problem.  No more updates are yet available so I must wait until I get another Blank update window before carrying out your requested changes, otherwise any test of your script would not prove that it solves the problem (I just thought that repeating the update process immediately for me has twice resulted in the update window populating correctly at the second attempt anyway so am not sure if using your script a second time would prove anything either).  However when I do change the script as soon as I experience a Blank update window I will leave it like that indefinitely for testing purposes.  Presumably I can safely do actual updates then thru terminal or Synaptic - you suggest we do not use your script for actual updating.
I do not do bash scripting myself but see that generally Yad is considered superior to Zenity - but I leave it to the "experts" to reach the right solution.
Thanks for your consideration in pursuing this puzzle.