Hi Brett,
The latest error messages are also caused by a "post build event," which is attempting to copy the ssc.dll files to a SAM folder that does not exist. That means that the builds succeeded, it's just the file copy process that failed.
If you are just using SSC without SAM, you can ignore the error. The SDKtool and tcsconsole applications should run.
If you are trying to build the SAM user interface, you will need to clone the SAM repository, and set the SAMNTDIR environment variable to the folder containing the SAM code as described in the SAM build instructions on GitHub:
github.com/NREL/SAM/wiki/Windows-Build-Instructions
Best regards,
Paul.