I've used this mod before the recent overhaul and it worked fine, but now all my condensers do nothing. In my old save I had them set up with no module slots and a base quality level, but now the mod seems to completely ignore that setting and gives all condensers a base quality of 0%.

please include a savefile.

Ive now also stumbled onto the same issue.
Didnt play since March 13th, updated all my mods and Factorio, relaunched the game, bam base quality does no longer apply.
Tried reinstalling the mod, loading the game with removed settings and then reapplying it or even setting it to 140% yet i get nothing.
Normally i play with 40% so i have a 70% reaching endgame.
Here is a link to a One drive repository with the zipped save file. Atleast i hope it is sending you there, i hate cloud technology...
https://1drv.ms/u/c/f0e0063dff58a53a/IQAW1fo7wwTFRrc6di6ZXnwFAZ9bP9iqOiKC-gaUbIMT6ag?e=PZNIG5

Please tell me if it worked or if you want a different share method.

It turns out that my issue was due to a bug in two other mods and not this one. The way the quality condenser changes its base quality with research, is that the mod makes an invisible beacon which applies an added quality effect to the condenser. That's why this mod has "beacon interface" as a dependency.

However I also used the Voidcraft mod, which had some code which unintentionally made the beacon interface ignore its own modules. The Voidcraft dev fixed their bug, but it's possible you have some other mod which is doing something similar and breaking the beacon interface.

Allrigth ive taken your advice and checked my mods.
It turns out that the Moshine and Panglia mod now use a mod named "Module-Quality-Defaults" which overwrites any beacon module interfaces in the game with some of its own.
This straigth up overwrites the mods base quality value and makes it so that the mod is incompatible with these 2 Planets.
Thanks for the help Shmee.

Edit: My game crashes at save file load when all 3 mods arent installed. :Sad-pikachu-face:

Allrigth ive taken your advice and checked my mods.
It turns out that the Moshine and Panglia mod now use a mod named "Module-Quality-Defaults" which overwrites any beacon module interfaces in the game with some of its own.
This straigth up overwrites the Quality Condensers beacon interface quality value and makes it so that the mod is incompatible with these 2 Planets.
Thanks for the help Shmee.

Edit: My game crashes at save file load when all 3 mods arent installed. :Sad-pikachu-face: