This line in CMQIA.pl: 
if($choice !~ /ready/i) {require "Unit6.pl"; system("Unit6.pl"); requi
+re "Unit6.pl"; goto ORIGINAL;}

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Should that not be: 
if($choice !~ /ready/i) {require "Unit6.pl";}

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Also, it might be safer to use if ... elsif

Update: see revised comment below

In reply to Re: Error with require LABEL; by tangent
in thread Error with require LABEL; by slinky773

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