Updated OP with fixed download link.

It should, in theory, work for any tech tree. All you need to do is change the path to point at the folder with the modded trees.

It searches recursively for all *TechDefs.xml. I think this is case sensitive.

Hit the check techs button to see a list of trees it has found.

If you want to merge existing trees with custom trees, you will have to do this manually at present.

I hadn't planned on developing this tool any further although it wouldn't be too difficult to add.

I was also toying with the idea of allowing a flat cost to a tech per age.

i.e give all the techs in age of expansion zero cost for a pseudo accelerated start.

Edit:

New version available see OP.

Much appreciated.

Thanks

This is correct. Works on any standard or modded tree that has techdefs.xml in the file name.

May not work on appended mods, that use a different file naming convention.

Unless the tech trees are changed drastically it should also work on future versions.