It is becoming increasingly clear that v11.30 has set off a motherlode of issues. Since the upgrade to v11.30, I am unable to pressurize space vehicles. I have attempted every possible combination of pressurization parameters in the systems portion, but the vehicle goes hypoxic (ie. total blackout) soon after launch; essentially rendering the vehicle useless. I suppose there is a way to disable blackout/hypoxic effects, but I would prefer to work within system parameters. Maybe a bug report?