Why can I not do this?

[Christopher-D]

It appears to me to be a bug, but before I report it, perhaps someone can point out that it isn't because I've overlooked something obvious.

This is in the current position in game 508446200. I have a military strength of 4. I want to play a Space Marines (my second) with +2 military and then a Rebel Base (military world, strength 6). I have at least two other cards in hand to pay for the Space Marines (actually three). But on selection it only offers me the option to use a goal marker, the Confirm option is greyed out.

[greenjacket124]

It's not automatically selecting the cards to discard because you have the goal marker. Just select those two cards, and Confirm will turn blue.

[Christopher-D]

Not quite what was happening, but close enough. Brain fade. Thank you.