Can't load kerbals into command pods (RSS/RO/RP-1) about kct

[billgarlic]

It sounds like you are using RP-1. You need to train your Kerbals or they won't be qualified and thus won't be available. For example, if you are using Mercury, first you need to give them Proficiency training. That takes a while but also lasts a while. After that, you need to train them for the mission. That takes a couple months but also only lasts a few months. During that time you will find them available for the missions in that KCT window. I have found the training is a bit longer than the build for me at this stage so it is not too hard to sync builds and mission training; however, you do need to make sure they are still valid after your craft not only completes but rolls out as well. BTW, they also rest for a short time after the mission.

[Darkrookie]

Thank you so much billgarlic! That was the problem.

Darkrookie