If you go to C:\Program Files\Scirra\Construct\Plugins

Is there a ShadowCaster.csx in there? C:\Program Files\Scirra\Construct\Plugins\Runtime should have one too.

If they aren't there a re-install of construct will most likely fix it.

Well, other than I didnt install it in the default location, yes there is a ShadowCaster.csx in /Plugins/Runtime. It has a file size of 27kb and a date of 07/07/2010. I did try reinstalling once and that didnt fix it.

I am getting this error message whenever I use the ShadowCaster behavior.

I have tried reinstalling directx, new videocard drivers and checking if my windows system files were fine. None of them have resolved the problem.

I am using a quad core AMD processor with an Asus motherboard and a Gforce 220.