Q. Strange things happen when I run my project.
A. If you've copied script or .fx files from a program folder into your project folder, and/or modified them, make sure that they are updated as well. Apart from that, see compatibility notes below.
Just for better understanding; this was the issue i guess? That means; the problem is not about A8->A7 compatibility, but about updating.
Because i'm very sure there is no differences about hlsl, between A7 and A8. Except; The A8 includes a number of features that are not affect compatibility like: "support for: include code from fx files with the #include statement" or "allowing the effect file to contain several techniques for different materials."
By the way, i'm glad you solved the problem.
