Generally what would be easiest would be to got to menu>options>supporter section>enter passcode (easy to find, just search strive for power supporter code), give yourself a ton of gold, and buy the upgrades.
I also found another issue which I have since patched. You will need to replace all instances of (?<=production)(.*?)(?=farmoutcome) in the old save with the new save version. To do this, make sure your find/replace option does not have wrap around, match case, or backword direction selected. Make sure the search mode is regular expression. Start the search with your cursor at the beginning of the save file code. Again, make sure to back up anything you mess with. You want to replace every instance.
":"default","resistance":-1,"restrained":false,"sedative":0,"stallbedding":"dirt","timesmilked":0,"usesedative":false,"workstation":"free","zones":{"sleep":"dirt","sleepfurnishings":[],"work":"free","workfurnishings":[]}}," was the healthy code for me.