It is time to start again from scratch and this journey to date as part of your learning experience.
As Arceye has said, you need to compile LinuxCNC from source. You really need to get your hands dirty and stop taking the easy way out by ignoring our advice. I would blow away my copy of Linux at this stage and reinstall it based on this step by step tutorial.
forum.linuxcnc.org/9-installing-linuxcnc...-or-deb?limitstart=0
When you compile LinuxCNC from source, make sure you install it as run in place and learn how to start linuxcnc from the command line without any menus.
So then, configure your hardware without bothering about the toolchanger. Once you have got it going, then come back to the toolchanger. There are no shortcuts, You have to do the hard yards.
By the time you get this far you should have learnt a fair bit about LinuxCNC and installing the toolchanger will be a walk in the park.
All of us have had a longer journey than we initially expected. I never wanted to install Linux and patch the OS to get the preemptive kernel, I never wanted to have to learn how to compile LinuxCNC, I did not want to learn how to change the GUI screen using Glade and I did not want to learn how to write a handler for the screen in Pythion and Also ,I never expected that I would end up writing a number of HAL components to get my machine operational. But I had to and I did it. Its been a journey over six months but I am finally there.
Someone has done all the hard work for you, there seems to be only 2 files to install and they even made a make file for you but there are no shortcuts, you have to take the journey one step at a time. At the end, you'll knock that tool changer over in a day.