errors running hello world kernel, need help with debugging info?

As long as you correctly updated your environment variables to point to 14.0 stuff, you won't have any issue with 13.x versions remaining on your system. Keep in mind though if you were to switch back and forth between Quartus versions, you should flash the FPGA (with an rbf and the BittWare Tool Kit in this case) from the version you are targeting in addition to updating your environment variables. My personal recommendation is to not jump between Quartus versions and just use the most recent.

Using emulation is a good troubleshooting practice, plus it will allow you to keep developing while concurrently working with BittWare to resolve the issue so that you can run in hardware :) Generally, you can develop faster if you first prove out functional correctness using the emulator because those compile times are significantly faster, and then compile to hardware when you want to benchmark performance.