Just finished civ stage, summoned a lot of pizza ships and got ready to go to space stage. Clicked the advance to next stage button, didn't work. Checked the timeline,
Dark Injections (unlimited complexity camera fix version)
Beta Spore Start (which is just a mod which removes the cutscene and makes you come out of water on your own)
Fungus 3's weapon pack (minus Genetic Modifier)
Tribal Village Freedom
On Spore Galactic Adventures version 1.1 (which is normal spore 1.5.1)
I was in this order:
Taking over every spice derrick
Charming an epic
Editing cities while two religious vehicles were moving
Summoning a lot of economic aircraft
Dressing up my species
Summoning more economic aircraft
(ironically, Imgur was overloaded when this happened and it was the first time in over three months i had to come to upload any images)
Edit: If anyone wants the pizza, here's a link for it's image file. It's an economic vehicle mostly taking inspiration from the Pizza Hut Meat Lover's/Meat Supreme, because i have the creativity of a toddler. The religious sandwich vehicle is also available here.
Has been resolved, however the timeline stain still remains.