hmm, forget about it, there seems to be a new version available

the version available should be 1.0.7 but the game doesn't give the option to upgrade my installed 1.0.3 version

ok, since the 1.0.4 and 1.0.7 version only are available for factorio 2.0 i report the crash when trying the 1.0.3 version with 2.1

Failed to load mods: ...alone-big-mining-drill__/prototypes/big-mining-drill.lua:572: attempt to call global 'assembler2pipepictures' (a nil value)
stack traceback:
...alone-big-mining-drill__/prototypes/big-mining-drill.lua:572: in main chunk
[C]: in function 'require'
true-standalone-big-mining-drill/data.lua:7: in main chunk

Mods to be disabled:
• true-standalone-big-mining-drill (1.0.3)

The newer versions are for 2.0, I'll check to see if I can fix the issue (if it still exists) and push a new 2.1 version

Should be fixed now, apparantly they changed something recently. As I haven't switched to 2.1 yet, I can't test it right now.
Update to 1.0.8 and let me know if the problem still occurs.

just tested, game loads, save starts, drill can be researched, built and used
ty for your quick response

p.s.
i know the problem, currently i run up to 3 instances of factorio 1.1, 2.0 and 2.1 at the same time to test stuff, i am still not done porting some other peoples mods from 1.1 to 2.0

I'd upgrade to 2.1 but some mods haven't been prepared for 2.1 yet and I cba rebuilding half my base because something about my chests has gone missing....