Autocorrelation corrupts HTML script

I was building autocorrelation rules for OpenPages application, when suddenly correlation started corrupting Action.c file.
When I click "Design Studio" and correlate at least one parameter VuGen generates statement like this:

web_url("cognos.cgi_11",
        "URL=http://sv123455.corp.com/ibmcognos/cgi-bin/cognos.cgi?b_action=rc&rsid={OP_Chart_rsidURL}&f= ... ",
        "Resource=1",
        "RecContentType=image/png",
         "Snapshot=t133.inf",
        LAST);hot=t133.inf", 
        LAST);

Please pay attention to the last two lines of this statement.

This behavior happens on two different machines.
Regeneration of a script doesn't change this behavior.
It happens when using my correlation rules and when using "Record scan" option.
Correlations still work OK in another script.
This script was recorded and partially correlated using VuGen 12.02 and then copied to a machine with VuGen 12.50.

Do you have any idea what can explain this issue and how to fix it?

P.S. I will try to finish correlations manually and will try to rerecord the same script.