I get this message when trying to install service pack 1 for Autocad MEP 2013. I'm on Windows 7 Ultimate 64-bit. It's a standalone installation.
I've tried updating from the stay connected button from within Autocad, and downloading the exe file. I run into the same problem with both. I've searched my entire C: drive for "MEP.msi" and found nothing.
I can't really do anything from the window above, so I click Cancel and I get this:
And then I get this message:
Does anyone have an idea of what's going on here? I googled this error but the only result was with a problem related to Microsoft Office..