I got an error on line 19:
Test.Execute() encounted an unexpected error:
message:Result of expression 'TC_Variables.Arrays' [null] is not an object.
lineNumber:19
sourceId:154605848
fileName:D:/Source/Protocol_TestTools/OpcUa/Server/CTT Test Tool/maintree/Monitored Item Services/Monitor Value Change/Test Cases/043.js

It seems that statement
TC_Variables.Arrays=MonitoredItem.fromSettings( Settings.ServerTest.NodeIds.Static.AllProfiles.Arrays.Settings );
sometimes returns null and sometimes returns an empty array object.

Modifying line 19 to
if(TC_Variables.Arrays == null || TC_Variables.Arrays.length<1 ) {
solved the issue for me.

I also have no Array configured and observed the same issue.
Actually the test shall be able to run without array configured but still fail due to a wrong IndexRange.

TC_Variables.Arrays[i].IndexRange=TC_Variables.Arrays[i].Value.Value.getArraySize()-TC_Variables.NumberOfValidItems+":"+( TC_Variables.Arrays[i].Value.Value.getArraySize()-10);

In most of the case the nodes Server_ServerCapabilities_ServerProfileArray contains less than 10 elements....

+10 not -10
And this is actually regarding the specification...
"If any of the upper bounds of the indexes is out of range, the Server shall return partial results."

Changed GetRequiredNodes to create an internal copy of the passed 'Settings' to work with, to avoid editing the content by reference

review changes in call, agreed to updates and closed