The most common solution to connectivity issues with a Vertical Docking Station is to reinstall the cables in the dock to ensure alignment. Follow the steps here first.
My Thunderbolt displays or peripherals do not work when connected through the dock
The preinstalled cables in the Vertical Dock for the MacBook Pro with Retina display are miniDisplayPort and are not compatible with Thunderbolt technology. All you have to do in this case is remove the extension cables and install your Thunderbolt cable in their place. Please note that the port voids on the dock are designed to work specifically with Apple and Henge Docks cables and not all 3rd party cables may fit.
Since upgrading to the new macOS I can no longer connect using the dock
It is possible that this is coincidental. Firstly, we recommend doing the cable reinstall that is outlined above. If that does not resolve the issue, reset the NVRAM on your MacBook following the steps here. If that still does not resolve the issue, download and reinstall the macOS update from the App Store.
When using the dock I am getting a kernel panic.
Hardware-induced kernel panics can be caused by a myriad of things. The most common is corrupt NVRAM. The easiest fix for that is to simply reset the NVRAM. It may also be caused by an issue with the system cache. While you can find software that will allow you to clean up your system cache, it may be easier to have this done by a professional.
It is very important that the firmware on your MacBook is up-to-date. If you have just upgraded to a new version of macOS it could simply be that a firmware update for one or more of your devices has not been pushed yet. In cases like this, you may want to check the manufacturer website for updates. The vertical dock itself does not require firmware updates.