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OK, I've had a little time this morning to take a look at this for you and here is what I have… It is working just fine for me but you will be required to make 1 or 2 little typo changes yourself…
In line 7… You need to change the folders path string…
var traceFolder = new Folder ('~/Desktop/Live Trace/');
In line 71… You may want to change the save options to 13 for CS3 compatibility…
compatibility = Compatibility.ILLUSTRATOR13;
...#target illustrator while (app.documents.length) { app.activeDocumen
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Hello Muppet Mark,
Thank you for the quick response!
Well, I've been using the Bridge Illustrator Trace tool to mass trace these PNG's into one layered AI. (Like you said, 360 rotation of a rendered C4D 
)
Its working but it gets really slow and inefficient as it reaches the hundreds.
Now I'm working with thousands of PNG's in one file ,so dividing it to sub directories , something that the Bridge script doesn't do, I think will make it much faster.
I was thinking if there is a way to create a loop that expands the trace before it imports the next PNG file, maybe it will make it less heavy.
As for the simplify, I can do it manually, it's the really the easier part.
And if there is a way to take all the saved AI files and combine them to one AI divided to artboards it will make even better.
Thank you again!
Expanding the live trace is NO problem… That would be some math… Phew? I did mean the path cleaning function…
Hello Im at home now thats much better… A quick blast of the old calculator and 7,920 live traces in the one AI file… Im NOT supprised you experience a slow down…? Thats a lot of tracing of cause I have no idea of the complexity of the actual trace result… It's been some time since that script was done and I would prefer to re-hash it even though it worked… Do you mind if its done as an AI script like above… Making it a Bridge script is doable but requires additional time… I have to bridgetalk stuff and its not so easy…
I tried figuring out how to make a loop over the sub directories, but without any success 
.
mean while I add few things, I'm sure there is a better way to do it 
1. a prompt to select folder (if there is a way to select multiple folders and/or files it might make it even more flexible)
2. each PNG is imported to a new layer with the name of the PNG. (but when i run it on my PC I get the space as in the file name as %20)
3. a Beep at the end of the script that lets you know it is finished. 
(I'm working on a different computer so it's very useful)
4. Import to single Ai file as I mentioned before.
and another thing, I'm using the Adobe ExtendScript Toolkit, and I couldn't find any way to auto format the script so it looks very messy, can you recommend me of another program or you know a way to do it?
AI Script will be perfect! THANK YOU so much for your help!
#target illustrator
while (app.documents.length) {
app.activeDocument.close(SaveOptions.PROMPTTOSAVECHANGES);
}
var traceFolder = Folder.selectDialog( 'Select folder for PNG files.', '~' );
if (traceFolder != null) {
var fileList = traceFolder.getFiles(/\.png$/i);
if (fileList.length > 0) {
var ai = new Folder(traceFolder.fsName+'/AI Files');
if (!ai.exists) ai.create();
main(fileList);
} else {
alert('This Folder contained NO PNG files!');
}
function main(fileObjs) {
with (app) {
var orginalUIL = userInteractionLevel;
userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
var docRef = documents.add(DocumentColorSpace.RGB, 576, 720);
for (var i = 0; i < fileObjs.length; i++) {
if (fileList instanceof File) {
var fileName = fileList.name.slice(0, -4);
with (docRef) {
var myLayer = app.activeDocument.layers.add();
myLayer.name = fileName
var thisPlace = placedItems.add();
thisPlace.file = fileObjs;
var thisImage = placedItems[0].trace();
redraw();
thisImage.tracing.tracingOptions.loadFromPreset('Wave');
thisImage.tracing.expandTracing();
redraw();
}
}
}
with (docRef) {
var aiOptions = saveAsAiFile();
var fileName = fileList[0].name.slice(0, -8);
aiFilePath = new File(ai.fsName + '/' + fileName + '.ai');
saveAs(aiFilePath, aiOptions);
close(SaveOptions.DONOTSAVECHANGES);
}
}
beep()
}
}else{beep()}
function saveAsAiFile() {
var aiOptions = new IllustratorSaveOptions();
with (aiOptions) {
compatibility = Compatibility.ILLUSTRATOR12;
compressed = true;
embedICCProfile = true;
embedLinkedFiles = true;
flattenOutput = OutputFlattening.PRESERVEAPPEARANCE;
fontSubsetThreshold = 0;
overprint = PDFOverprint.PRESERVEPDFOVERPRINT;
pdfCompatible = true
}
return aiOptions;
}
l have a go… Im NOT going to create 8k pngs to test with though… 
May be 20ish in a couple of folders and the rest is up to you… Beep might be a smoke alarm depending on what your using… What way up the layer stack? All folders 360 png files each?
For now It's 360 each.. it will probably change.
The first file (in an alphabetic way) is in the lowest layer. it doesn't mater lowest or highest just to keep it alphabetic.
I don't want to cause a fire so If you can use the system noises instead of the beep
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