Adds quality scaling to belt speed, drill/pumpjack mining speed, cargo/fluid wagon size, storage tank size, and locomotive speed/power usage, adds options for speed module quality penalty, quality module quality bonus, and adds a number of optional quality-related items and entities.
Small changes concerning balance, gameplay, or graphics.
Make sure you're reporting the error in the correct place. If Factorio is asking if you want to disable better-quality (x.x.x) then you're in the right place.
Read the Known Issues discussion post first. Please only post if your issue is not listed there, or you believe posting your issue will still be relevant, such as posting advice or adding additional context to the problem.
When posting an error, please copy and paste the entire error from the Factorio window into your post. It can be helpful to surround your error with ``` (triple back-ticks) to prevent any Markdown auto-formatting from messing up the error message.
If you believe the error originates from a mod incompatibility, please post your modlist. A full list of your mods can be found within your C:\Users\User\AppData\Roaming\Factorio\factorio-current.log file. Use CTRL+F and search for Checksum. That checksum section of the log contains all of your mods. This can be helpful even if you already know which mod is causing the incompatibility.