What is the file one should delete when scripts are not working

I use the same script and it works for me with the latest version of Bridge (2017)

It does not store anything anywhere, so the Bridge prefs might get corrupted and interfere with scripts.

Here is the version I have...

#target bridge 
if( BridgeTalk.appName == "bridge" ) { 
ReplaceDescription = new MenuElement("command", "Find and Replace", "at the end of tools");
}
ReplaceDescription.onSelect = function () { 
var win = new Window( 'dialog', 'Find && Replace' ); 
g = win.graphics;
var myBrush = g.newBrush(g.BrushType.SOLID_COLOR, [0.99, 0.99, 0.99, 1]);
g.backgroundColor = myBrush;
win.orientation='column';
win.p1= win.add("panel", undefined, undefined, {borderStyle:"black"}); 
win.p1.preferredSize=[380,100];
win.g1 = win.p1.add('group');
win.g1.orientation = "row";
win.title = win.g1.add('statictext',undefined,'Caption Editor');
win.title.alignment="fill";
var g = win.title.graphics;
g.font = ScriptUI.newFont("Georgia","BOLDITALIC",22);
win.p6= win.p1.add("panel", undefined, undefined, {borderStyle:"black"}); //Replace
win.p6.preferredSize=[380,100];
win.g600 =win.p6.add('group');
win.g600.orientation = "row";
win.g600.alignment='fill';
win.g600.st1 = win.g600.add('statictext',undefined,'Replace');
win.g600.st1.preferredSize=[75,20];
win.g600.et1 = win.g600.add('edittext');
win.g600.et1.preferredSize=[200,20];
win.g610 =win.p6.add('group');
win.g610.orientation = "row";
win.g610.alignment='fill';
win.g610.st1 = win.g610.add('statictext',undefined,'With');
win.g610.st1.helpTip="Leave this field blank if you want to remove the characters";
win.g610.st1.preferredSize=[75,20];
win.g610.et1 = win.g610.add('edittext');
win.g610.et1.preferredSize=[200,20];
win.g620 =win.p6.add('group');
win.g620.orientation = "row";
win.g620.alignment='fill';
win.g620.cb1 = win.g620.add('checkbox',undefined,'Global');
win.g620.cb1.helpTip="Replace all occurrences of";
win.g620.cb2 = win.g620.add('checkbox',undefined,'Case Insensitive');
win.g620.cb2.value=true;
win.g620.cb3 = win.g620.add('checkbox',undefined,'Remove any ()[]');
win.g620.cb3.value=false;
win.g1000 =win.p1.add('group');
win.g1000.orientation = "row";
win.g1000.alignment='center';
win.g1000.bu1 = win.g1000.add('button',undefined,'Process');
win.g1000.bu1.preferredSize=[170,30];
win.g1000.bu2 = win.g1000.add('button',undefined,'Cancel');
win.g1000.bu2.preferredSize=[170,30];
win.g1000.bu1.onClick=function(){
if(win.g600.et1.text == ''){
    alert("No replace value has been entered!");
    return;
    }
 win.close(0);
var sels = app.document.selections;
for(var a in sels){
var thumb = sels;
md = thumb.synchronousMetadata;
if(win.g620.cb1.value && !win.g620.cb2.value) var patt = new RegExp (win.g600.et1.text.toString(),"g");
if(!win.g620.cb1.value && win.g620.cb2.value) var patt = new RegExp (win.g600.et1.text.toString(),"i");
if(win.g620.cb1.value && win.g620.cb2.value) var patt = new RegExp (win.g600.et1.text.toString(),"gi");
if(!win.g620.cb1.value && !win.g620.cb2.value) var patt = new RegExp (win.g600.et1.text.toString());
md.namespace =  "http://purl.org/dc/elements/1.1/";
var Caption = md.description ? md.description[0] : "";
if(Caption == "") continue;
var result=patt.test(Caption.toString());
if(result == true){
    var newCaption = Caption.replace(patt,win.g610.et1.text.toString());
    if(win.g620.cb3.value)  newCaption = newCaption.replace(/["'\(\)]/g, "");
    md.description='';
    md.description = newCaption;
        }
    }
}
win.show();
app.document.chooseMenuItem("PurgeCacheForSelected");
};

After some reading, it seems that it works for some scripts that need to store some info "on the side" to retrieve it later.

I'm all ears if there is another file that can fix non-working scripts.