Okay, I've found the reason for that elusive error I posted about before. It has nothing actually to do with the save. I checked and the job exp and all that stuff was already present on the save. I already had saved it in 9.7. The real reason is that the random events for guardian and slave catcher jobs use the global.evaluate function which relies on the global.currentslave variable. gloabl.currentslave however is only set when the slave tab is opened(the slave which tab it is) or in sexuals.gd on a few occasions. This means that the slave data used in those random job events is the data for the slave which had it's slave tab opened or had sex most recently. This is bad enough as the wrong slave's data is used, but when the game is started freshly and a save is loaded where a slave is assigned to either guardian or slave catcher jobs then the day is passed without doing anything else the game will generate errors in the console as the global.currentslave is nil/null and no end of day report is displayed.
I uploaded the needed changes to jobs&specs.gd to pastebin again: https://pastebin.com/DnjJvAnG