Compare Config with Publishing Engine

I am unable to run the ‘Compare configuration with publishing engine’ tool from the Arbortext Editor > Tools > Administrative Tools menu

I get a big error dump - shown here:

Unexpected exception writing composition configuration comparison
Exception message = 'CompConfig document error: <DoctypeConfiguration> element with no 'path' attribute.'.
java.lang.Exception: CompConfig document error: <DoctypeConfiguration> element with no 'path' attribute. 
at
com.arbortext.e3ci.CompConfigRemote.parsePathEntry(COmpConfigRemote.java:667)
at
com.arbortext.e3ci.CompConfigRemote.parseDoctype(CompConfigRemote.java:862)
at
com.arbortext.e3ci.CompConfigRemote.<init>(CompConfigRemote.java:299)
at 
com.arbortext.e3ci.Manager.writeCompConfigComparison/Manager.java:2869)

I am using Arbortext 8.2.1.0 with Java 18.0.2

I have ensure APTCUSTOM path variable is set for both user and system.

I have been unable to find any other help about this.  Is anyone running into this?  Does your comparison tool work?

I’m trying to run this tool because when I publish from within Styler - when testing changes made to the stylesheet - the stylesheet works - I get the output I intended - but when I publishing using the stylesheet on the PE  - which I always re-load and rescan the publishing engine after updating the stylesheet on the PE - the output does not work.    :(

thanks for your help!