[beckyo]

Use this pattern

isc.defineClass("TabBarA", TabBar);
if (isc.TabBarA)
{
	isc.TabBarA.addProperties
        ({
	    	...
	});
}
    
isc.defineClass("TabSetA", TabSet);
if (isc.TabSetA) 
{
    isc.TabSetA.addProperties
    ({
            paneContainerClassName: "xxxx",
            tabBarConstructor: isc.TabBarA
    });
}


isc.defineClass("TabBarB", TabBar);
if (isc.TabBarB)
{
	isc.TabBarB.addProperties
        ({
	    	...
	});
}
    
isc.defineClass("TabSetB", TabSet);
if (isc.TabSetB) 
{
    isc.TabSetB.addProperties
    ({
            paneContainerClassName: "yyyy",
            tabBarConstructor: isc.TabBarB
    });
}

tabSet1.setScClassName("TabSetA");
tabSet2.setScClassName("TabSetB");

[mariusachim]

Here is the corected version. :)

	isc.defineClass("ImgTabProcess", ImgTab);
	...

Silly mistake:
TabBar as base class was used instead ImgTab for the new ImgTabProcess class

Cheers,
Marius