Mac error: A definition for the document class could not be found in the classpath

Hi,

I am working on getting this (http://wonderfl.net/c/abv6/) up and running on Flash CS6 which is running on an apple iMac.

I used to have flash on a PC, and when that was the case, all I did was save a .as file, e.g. smoke2.as, and a .fla, e.g. smoke2.fla, in the same folder.

I’d the go into the FLA file, and go to File > Publish Settings

On the section where it has a drop down allowing you to choose the Actionscript Version, I’d choose ActionScript 3.0, click on the spanner next to it, and in the Document class section, enter in the the name of the Class file from the AS file.

So for this example, the AS file says:

public class SmokeTTT extends Sprite

I’d therefore have entered SmokeTTT in the Class file, and click on the green tick to validate that entry.

Now, on the Mac, if I do that, I get an error saying:

A definition for the document class could not be found in the classpath, so one will be automatically generated in the SQL file upon export.

I checked the Source Path and can confirm that the path to where my AS and FLA files are stored is already there - confirmed here:
http://jimpix.co.uk/images/forums/Screen Shot 2013-07-27 at 10.16.29.png

This confirms that the path value I’ve entered does contain the FLA and AS files:
http://jimpix.co.uk/images/forums/Screen Shot 2013-07-27 at 10.16.50.png

However, when I point to the SmokeTTT class, I get this error:
A definition for the document class could not be found in the classpath, so one will be automatically generated in the SQL file upon export.

The Library Path has this in the folder list:
$(AppConfig)/ActionScript 3.0/libs

And here is the AS file in case anyone gets chance to see if there is something I’m doing fundamentally wrong in thinking that the correct Document class to point to is called “SmokeTTT”:
http://jimpix.co.uk/images/forums/smoke2.txt

Any advice much appreciated.

Thanks!