I ran A6 on my Acer Aspire 5730z laptop and it worked just fine until I formatted my computer and reinstalled the OS. Now the 'build' button literally ignores me. I also downloaded A8 and it says (assuming my project is called 'game')
Can't open game_a8.c
Can't compile game_a8.c
Error E3555 - Start up failure ab=ny key to abort
This is the 3rd intel graphics card I've installed on my acer since I formatted it. None of them works with gamestudio. I don't know what I had before formatting that I don't have now. I believe my direct X is 10.

Have you updated your drivers and DirectX?
Sometimes I forgot this myself.

Just look at the error:
"Can't open game_a8.c"

After reinstalling, you probably changed the path to your 3DGS installation.
I guess you start from WED, so just open the map, go to File/Map Properties and select the Script again, even if it is already there.