Error regarding category names for 1.8 not being set: Resolved.
Error regarding withdrawing coins when inventory full: Resolved.
An update to your lang_en.yml is required. See below for change or download your current one delete from the server and allow the jar to generate the new one.
Code (Text):
Coin:
# %AMOUNT% - The amount of coins
Withdraw: '%PREFIX% &7You have withdrawn %AMOUNT%!'
Deposit: '%PREFIX% &7You have deposited %AMOUNT%!'
Not_Enough: '%PREFIX% &7You don''t have %AMOUNT% MobCoins to withdraw!'
Zero: '%PREFIX% &7You can''t withdraw 0 Mob Coins!'
No_Space: '%PREFIX% &7You don''t have enough space in your inventory to hold &6%AMOUNT% &7MobCoins!' #<- THIS IS THE NEW LINE