79 - GridDefaults.lua error

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?
Get the following error every time Grid2 is loaded.

1x Grid2-3.3.0.317\GridDefaults.lua:134 bad argument #1 to 'pairs' (table expected, got nil)
Grid2-3.3.0.317\GridDefaults.lua:134 in function `CreateCategories'
Grid2-3.3.0.317\GridDefaults.lua:184 in function `Setup'
Grid2-3.3.0.317\GridCore.lua:211 in function <Grid2\GridCore.lua:197
(tail call): ?:
<in C code>: ?
<string>:"safecall Dispatcher[1]":9: in function <[string "safecall Dispatcher[1]"]:5>
(tail call): ?:
AceAddon-3.0-5 (Ace3):539: in function `EnableAddon'
AceAddon-3.0-5 (Ace3):629: in function <Ace3\AceAddon-3.0\AceAddon-3.0.lua:615
<in C code>: in function `LoadAddOn'
Interface\FrameXML\UIParent.lua:234 in function `UIParentLoadAddOn':
Interface\FrameXML\UIParent.lua:257 in function `CombatLog_LoadUI':
Interface\FrameXML\UIParent.lua:481 in function <Interface\FrameXML\UIParent.lua:453

What version of the product are you using?
R289

Do you have an error log of what happened?

Please provide any additional information below.