Whenever I try to load this mod I get the error "Failed to load mods: Technology ht-RA: Non-contiguous levels: 1, followed by 1"

It is caused by vanilla game 0.17.23 update: "The game now checks that technology levels are contiguous."
A lot of my mods (as well as other mods like those from Bob) suffer from this change as well...
This would need a lot of work to do all the renaming, so please don't expect I can fix this quickly...
I will notice you when the problem is solved.

Meanwhile, if you downgrade the game to 0.17.22, all these mods should still work.
Thank you for your consideration.

oh good, its not just me who is having this issue, thanks for the response Schall

Thank you for the response. I was not expecting it to be a fast fix, I just wanted to make sure you knew this was happening.

The fix is just released as 0.17.3.
Sorry for the waiting. That Friday update got me in surprise, and I did not have free time to deal with that.

Hi, I got this message when I start a game :

88.020 Error AppManagerStates.cpp:1397: Error while applying migration: Schall Tank Platoon: SchallTankPlatoon_0.17.0.lua

...allTankPlatoon__/migrations/SchallTankPlatoon_0.17.0.lua:7: attempt to index field 'tank-L' (a nil value)
stack traceback:
...allTankPlatoon__/migrations/SchallTankPlatoon_0.17.0.lua:7: in main chunk

Thanks for reporting.
Should be fixed in 0.17.4.