I am using C3D 2011 version.
Appears to be an issue with the Autocad Wizard for express edition. Maybe it changes a reference?
I started my own basic class library using framework 4 and it worked fine but get the error if trying to use it within the wizard.
So I created the DLL separately and referenced it in the Autocad Wizard project and it works fine.
But if I add that same class to my Autocad Wizard project I get the acadDoc.Save(); underlined as an error.
I have double checked its all set to framework 4.0!
So sure it must be a reference or project setting I'm missing that is changed by the Autocad wizards?
*************EDIT******************
At least I will know better next time
Just had to add Microsoft.CSharp to the references lol
Confused as always - Microsoft.CSharp was available within the object browser already so not sure why I needed to reference it. :ugly: