Running Test Script wipes out Chip parts

Posted by scipio on Jan 18, 2020; 3:26am
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Running-Test-Script-wipes-out-Chip-parts-tp4034131.html

Stuck on first problem - the NOT gate

The hdl loads fine. I devise and load the text script (from Notepad) without any problem and its correct (checked against answers on Internet).

I then load the test script - again no problem. However as soon as I run (either single or complete steps), the test script  wipes out the Parts details. And of course I get an error.

There is no problem with cmd either.

What am I doing wrong? Does not appear that I can save the Chip PARTS before running the test script.