having the same problem, looking for a fix. none of my admins can save settings. we all crash after hitting close. then when we get back in game, it doesn't let us access the settings at all, not even with cheat commands. it works fine on one of my servers, but not the other, so i'm guessing it's a conflict with another mod, but no idea which one.

What mods are you guys running? Post your mods list. If there's one that everyone has in common, it'd be good to narrow it down so hopefully there can be a fix for it.

I am having the same problem freezing when I close the editing book
not sure if its the mods or if there are to many creatures for the mod to handle.
everything works after I remove all the additional creature and noxious creature mods.
here is the list of mods.

Stacks for Humans (1333158793)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1333158793
Primal Fear (839162288)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=839162288
Immersive Taming (1251632107)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1251632107
Creature Finder Deluxe (1591643730)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1591643730
Gaia (1125442531)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1125442531
Gaia Wyverns (1921128412)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1921128412
Revive My Dino - Dino Resurrection (1957185915)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1957185915
Dino Hybrids & more! (1558114752)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1558114752
Sauropod Pack (2111663419)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2111663419
Dino Storage v2 (1609138312)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1609138312
Redwoods Anywhere (Open Source) (722649005)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=722649005
Structures Plus (S+) (731604991)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=731604991
SPlus and SuperStructures Fix (2022062267)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2022062267
Upgrade Station v1.8i (821530042)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=821530042
Death Recovery Mod (v1.12.1) (751991809)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=751991809
(Open Source) New Tranq Arrows (706933266)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=706933266
More Narcotics & More Tranq-Arrows Combined v3.0 (754885087)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=754885087
Narcotic Plus (864201550)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=864201550
Wooden Hanging Bridge (893834064)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=893834064
HG Kibble Bench 2.7 (1303271176)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1303271176
Castles, Keeps, and Forts: Remastered (1814953878)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1814953878
Castles, Keeps, and Forts: Science Fiction (2121156303)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2121156303
Auction House v3.2.1b (898049820)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=898049820
Awesome SpyGlass! (1404697612)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1404697612
Ancient Featherlight (Rideable) (1283333756)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1283333756
Awesome Teleporters! (889745138)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=889745138
Phoenix: Reborn From the Ashes (1449927867)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1449927867
eco's RP Decor (741203089)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=741203089
eco's Primordial Saddles (1741916864)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1741916864
Ark Steampunk Mod (679529026)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=679529026
Ancient Dragons and Wyverns (1206835819)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1206835819
Element Transmitter (1403172746)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1403172746
Element Seeds (2072969644)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2072969644
Harvestable Blackpearls (2008686682)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2008686682
Additional Creatures 2: Wild Ark (1373744537)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1373744537
Additional Creatures 2: JPE Rebalance (1768499278)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1768499278
Additional Creatures 2: Paranoia! (1523045986)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1523045986
Additional Creatures: Aquaria (1676159020)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1676159020
ARK Bionic (2247979980)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2247979980
Clockworks Creatures (1819883361)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1819883361
Noxious Creatures (1356703358)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1356703358

I did some further testing and I had to drop 5 creature mods to get the save to work.
I think I just had to many creatures.
new mod list were everything works like it should
Stacks for Humans (1333158793)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1333158793
Primal Fear (839162288)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=839162288
Immersive Taming (1251632107)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1251632107
Gaia (1125442531)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1125442531
Gaia Wyverns (1921128412)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1921128412
Revive My Dino - Dino Resurrection (1957185915)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1957185915
Dino Hybrids & more! (1558114752)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1558114752
Dino Storage v2 (1609138312)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1609138312
Structures Plus (S+) (731604991)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=731604991
SPlus and SuperStructures Fix (2022062267)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2022062267
Upgrade Station v1.8i (821530042)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=821530042
Death Recovery Mod (v1.12.1) (751991809)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=751991809
More Narcotics & More Tranq-Arrows Combined v3.0 (754885087)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=754885087
Wooden Hanging Bridge (893834064)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=893834064
HG Kibble Bench 2.7 (1303271176)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1303271176
Castles, Keeps, and Forts: Remastered (1814953878)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1814953878
Castles, Keeps, and Forts: Science Fiction (2121156303)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2121156303
Auction House v3.2.1b (898049820)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=898049820
Awesome SpyGlass! (1404697612)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1404697612
Awesome Teleporters! (889745138)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=889745138
Phoenix: Reborn From the Ashes (1449927867)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1449927867
eco's RP Decor (741203089)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=741203089
Ark Steampunk Mod (679529026)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=679529026
Element Transmitter (1403172746)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1403172746
Element Seeds (2072969644)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2072969644
Harvestable Blackpearls (2008686682)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2008686682
Additional Creatures 2: Wild Ark (1373744537)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1373744537
Additional Creatures 2: JPE Rebalance (1768499278)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1768499278
Additional Creatures 2: Paranoia! (1523045986)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1523045986
Additional Creatures: Aquaria (1676159020)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1676159020
Redwoods Anywhere (Open Source) (722649005)
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=722649005

I am having this issue too, was it confirmed an issue with creature mods? I haven't changed our mod collection in awhile and I was able to edit settings fine until now. My other admin has the same issue.