No I don't need the plugin for A6, thought it would not mind to try if mesh.dll worked with that version and maybe give a clue why it's not working right now.

Also i'm just using the Lite-c script example you've posted to load the Meshdemo with the full version of the dll. I have all versions of A6 on a DVD using the old key.exe and not in trial mode to see if A6.60 would work, but it didn't.

Reading the post again, I think with using the A6 demo files you meant those that are inside the Meshdemo.zip posted above? Well in that case would I only have to save them again in A7 to get it working?