One or more errors occurred. when starting locally

I have checked out a fresh copy of a 6.8.1 application. When starting. During the step "Copying files..." the process stops and an error is displayed: "One or more errors occurred.".

When I check the deployment\log folder I see 3 files:

build_core_clean_log.txt

build_core_compile_log.txt

build_core_deploy_log.txt

All 3 of these files end with the lines:

BUILD SUCCESSFUL
Total time: 0 seconds

So I do not have any leads on what the actual error occuring is.

Does anyone have any idea what's happening? I have already tried running Mendix as administrator and upgrading to the latest JDK.