Version 0.5.10

On trying to control avatar:

Error while running event Avatars::on_gui_click (ID 1)
Avatars/scripts/avatar_control.lua:129: attempt to index field 'avatarQuickBars' (a nil value)
stack traceback:
Avatars/scripts/avatar_control.lua:129: in function 'gainAvatarControl'
Avatars/control.lua:85: in function <Avatars/control.lua:59>

On pick up:

Error while running event Avatars::on_pre_player_mined_item (ID 11)
Avatars/scripts/storage.lua:73: bad argument #1 of 2 to 'pairs' (table expected, got nil)
stack traceback:
[C]: in function 'pairs'
Avatars/scripts/storage.lua:73: in function 'removeFromTableByKey'
Avatars/scripts/storage.lua:282: in function 'migrateAvatarQuickBars'
Avatars/scripts/storage.lua:130: in function 'remove'
Avatars/control.lua:188: in function <Avatars/control.lua:169>

I run a bunch of mods on my game, but these errors reproduce after disabling every other mod.

Any help appreciated.

Is this an old save that had a prior version of Avatars?

Yes, I did have a previous version of avatars on this save.

Though I didn't use any of avatars mod items until 0.5.10 (I haven't research them with space exploration massive requirements).

Tried out a few things, mod doesn't crash on a brand new game (cheat mode) even with full set of mods I had on a save that does crash

Thank you for the hint. Disabling the mod, re-saving and enabling the mod back did the trick

Ya, a new save should be fine, it must be something with the migration I did from the prior versions. I'll still look into it, but I'm glad that was able to fix your save.

Brainfart on how to compare numbers, this bug should be fixed.