What's wrong with my code?

[bearbin]

Can anyone find the issue with the code at http://github.com/bearbin/BearHomes-MCS that causes the error:

Code:

Plugins/BearHomes/HandleHomeCommand.lua:186: attempt to concatenate global 'errorMsg' (a nil value)

when i try to do /home delete and

Code:

Plugins/BearHomes/savehandler-inisave.lua:149: bad argument #2 to 'insert' (number expected, got string)

when i try to do anything else?