i can't use these races in game

You have to install a race menu extender.
https://steamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1392617198&searchtext=Solaer
This one is my personal favorite, but there's plenty of others as well.

Hey, I'm not sure why but this mod isn't showing up at all when I try booting up the game. I thought it might be a problem with FU at first, but I made a separate instance with just the mod and a character extender, and it didn't work either.

The mod doesn't appear in the ingame mods list, nor does the species appear in the Character Creation menu. It is, however, listed in the instance.json file, so I have no clue why it doesn't show up when I load the game.

That's incredibly strange. I assume you're doing this via the workshop, so all I can recommend is subscribing and resubscribing? Or heck, even restart Steam maybe.
But if you have the .pak and THAT'S not even working, then unfortunately I have absolutely no clue.

Hi I keep running into an issue where it crashes after dying ingame, and it brings up an error something about the respawn animation? Also I've never done this before so my apologies!

[20:32:52.209] [Error] Exception caught in client main-loop
(AssetException) Error loading asset /cinematics/respawn/mollopod/respawnhardcore.cinematic

引用自 Scourgie Gingerfield：

Hi I keep running into an issue where it crashes after dying ingame, and it brings up an error something about the respawn animation? Also I've never done this before so my apologies!

[20:32:52.209] [Error] Exception caught in client main-loop
(AssetException) Error loading asset /cinematics/respawn/mollopod/respawnhardcore.cinematic

It's okay! I will need your entire log if I'm to be able to weed out the specific source of the issue (most efficient method I've seen is putting it in pastebin and linking it). However, I will make a broad assumption here. If you're using FU, you'll probably need a compatibility patch such as this one: https://steamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2427232435

I unfortunately have that mod as well, but here's my log- Thank you so much for your patience!
https://pastebin.com/240awMQz

Well this is odd- I've never encountered this error before. Unfortunately I don't have any advice to give at this time, but I'll try to see if there's anything I can do to fix this error on the mod's end. Sorry for the inconvenience!

That's totally alright, thank you for your time. I look forward to using this mod when I can!

Are the Mollopod racial weapons supposed to be a tier lower than the ore used to make them? I find it inconvenient that a Durasteel spear is only a Tier 3 weapon somehow, or that the iron and tungsten spears are both only Tier 1...

Hello! I am very sorry to ask about this, but I've installed so many mods that the item IDs, 9901-9906, are pushed up enough that its starting to conflict and execute my game via crashes. For some reason though, only item ID 9905 (mollosquarewaves) is the one causing the exceptions.
I've tried removing the other mods listed to conflict with that material/object ID and it just keeps getting replaced by another conflict that crashes it again.
Is there anything causing the 9905 item to stay adamant and not get pushed up in the item ID list?
I really like the mollopod's apparel so I would rather not unsubscribe to the race mod(which fixes the exception) and I've already tried removing other mods and additions that cause the 9905 conflict.
Once again I apologize as I think I know this error-exception can only happen if I've spammed installed mods to bits.

@Panda_The_Boss
Sorry that wasn't intentional- Balancing has proven to be quite a challenge to figure out with the way Starbound handles damage. I'll try to fix that as soon as I'm able.

@Norie
I'm sorry for the inconvenience. The incompatibility is with Ancient Cosmos due to blocks. If you haven't already seen, someone was generous enough to release a patch that should fix this issue.

And to both of you I apologize for the incredibly late response, I've been without my desktop for a few weeks so I've been very out of the loop.

Hi! So as per before I had an issue with the respawn animation with this species- I think I might've figured out why. I more often than not use hardcore, and after installing the Lastree species mods and hitting the same error; I found a mod like this! https://steamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1506495105
It might be a broad assumption but it led me to the conclusion that your mod suffered the same issue. It's not a big deal obviously, I just thought you might like to be aware of this. I however have no modding experience so I could be totally wrong- Either way thank you for your time, I greatly enjoy the space slugs and what content you've made for them.

AH, thank you! I remember someone in the past bringing up this issue, but I hadn't a clue how to fix it. If the creator of that mod doesn't end up adding them, I'll try my best to include what's needed myself. Also glad to hear you like the race! ^^

How can I solve that?

[03:04:13.902] [Error] Could not instantiate item '[starforge-oldreliable, 1, {}]'. (AssetException) Error loading asset /items/buildscripts/starforge-buildexaltedarmour.lua
[03:04:14.087] [Error] Could not load recipe /recipes/weaponforge/exaltedimmolatorhead.recipe: (ItemException) No such item 'starforge-exaltingcharge'
[03:04:16.584] [Error] Could not instantiate item '[mollobricks, 5, {}]'. (MaterialException) No such material id: 9901

[03:04:17.406] [Error] Could not instantiate item '[mollosquarewaves, 5, {}]'. (MaterialException) No such material id: 9905

[03:04:19.024] [Error] Could not instantiate item '[molloridgebrick, 5, {}]'. (MaterialException) No such material id: 9904

[03:04:19.441] [Error] Could not instantiate item '[molloledgebrick, 5, {}]'. (MaterialException) No such material id: 9903

[03:04:20.954] [Error] Could not instantiate item '[mollopillar, 5, {}]'. (MaterialException) No such material id: 9907

[03:04:21.064] [Error] Could not instantiate item '[dragonstaff2, 1, {}]'. (JsonException) No such key in Json::get("particles")
[03:04:21.964] [Error] Could not instantiate item '[mollowaves, 5, {}]'. (MaterialException) No such material id: 9906