there is a bug, if you have the astronaut complet at lvl 2 (career) and reach the max kerbals and you accept a missin to resque a kerbal from space - he will add to the astronout complex to its possible to get unlimit amout of kerbals only with lvl 2 upgrade. now my suggestion, the kerbal will add to a new tab, where the new kerbal can hire for 0 credits so you can add to the k-team if you upgrade to lvl 3 or a kerbal get lost (hope that dont happend) redgards Shaymes Kerman