Dora SkinWeight Import Export 3.8.1 for Maya (maya script)

I installed this script and successfully exported weight lists for two meshes.  I switched to the import tab and attempted to import onto the same meshes (after deleting history, rescaling the skeleton and skin, and adding a new skin cluster) using vertex order, and the script did nothing.  I poked around in the source file and discovered it was because the hidden
DoraSkinWeightImpExp_TXTF_ImpName text field wasn't being populated, so
DoraSkinWeightImport would exit prematurely.  This if statement on line 1604 seems to be the culprit:

if( size( $dswAppendList ) != 0 )

$dswAppendList will always have 0 items when the script is first run (and whenever it's run without anything in the list).  Adding items to the list won't cause that block of code to be re-evaluated.