Bug:
Can't quicksave with CASM when in FriendshipMetro02 - Tenleytown/Friendship station. The MCM menu has been patched.
Bug exist with following load order:
# This file was automatically generated by Mod Organizer.
FalloutNV.esm
DeadMoney.esm
HonestHearts.esm
OldWorldBlues.esm
LonesomeRoad.esm
GunRunnersArsenal.esm
ClassicPack.esm
MercenaryPack.esm
TribalPack.esm
CaravanPack.esm
Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
TaleOfTwoWastelands.esm
TTWFixes.esm
TTWVaultSuitHotfix.esp
TTW_Companions_Essential.esp
The Mod Configuration Menu.esp
CASM with MCM.esp

Possible cause:
The name of this cell is longer than most.