With Pyanodons (I think only pycoalprocessing is required to trigger this), there are science packs that end with "-1", "-2", etc. This mod fixes those by replacing the final "-" with a space; but in 2.0 space is apparently no longer allowed in the name, so the mod fails to start if such science packs exist.

I was able to fix this locally by having it use a "_" instead of a space; but the problem remains of how to migrate existing saves. It seems that proper renaming of a technology can only be done with JSON migrations https://lua-api.factorio.com/latest/auxiliary/migrations.html#json-migrations but that requires a hardcoded list of all the technologies to migrate. Maybe there's some other way to do the migration?

Thanks for the bug report. I will fix it as as much as possible.

I fixed the error with the name suffixes. However, I have not added any migrations.

I looked at the possibility of adding dynamic migration. This can be done in the on_configuration_changed event in control.lua, but at the moment I do not plan to make such changes.