Script reporting wrong layer type after replacing footage

Question

Hi,
I do have a Composition with Solid layer. When I run this script with the layer selected, it shows me that this really is a solid layer:
curLayer = app.project.activeItem.selectedLayers[0];
if (curLayer.source.mainSource instanceof SolidSource) {
alert("this is solid");
}else {
alert("this is not solid"); }
But when I select this solid in the Project window, right click, select Replace footage - File, and select an image, when I run the same script again, it still displays "this is solid" message.
When I reopen the After Effect file, is shows "this is not solid", which is right.
Is this a bug, or do I need to call some refresh function?
Thanks a lot!

Answer 1

Hi Myleniu,
Thanks for your replay. Actually, it doesn't matter what makes up my comp, this problem just randomly happen when I render any comp. For example, I have a comp named "noise", I run a script to replace the music then render it, I use a "for" loop to do this 5 times and the music noise problem just happen one time.
I'm starting to think that win server might be the problem.