[Slurpuff]

I just installed r18.d and the same problem persists with the following error (this error triggger my lockout of the artifact weapon):

1x FrameXML\MainMenuBar.lua:126: Usage: GetCostForPointAtRank(rank)
[C]:: in function 'GetCostForPointAtRank'
FrameXML\MainMenuBar.lua:126: in function <FrameXML\MainMenuBar.lua:124>
...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0-6.lua:230: in function <...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0.lua:225>
...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0-6.lua:289: in function <...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0.lua:276>
...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0-6.lua:307: in function <...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0.lua:306>

This time it occurred as soon as I opened character stat window.

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Now I'm also getting the following error when placing the artifact weapon inside my bags:

2x nibRealUI\Modules\InfoLine.lua:725: bad argument #1 to 'next' (table expected, got nil)
[C]:: ?
nibRealUI\Modules\InfoLine.lua:725: in function <nibRealUI\Modules\InfoLine.lua:713>
nibRealUI\Modules\InfoLine.lua:3349: in function <nibRealUI\Modules\InfoLine.lua:3346>
...nit\libs\CallbackHandler-1.0\CallbackHandler-1.0-6.lua:157: in function <...nit\libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:157>
[string "safecall Dispatcher[3]"]:4: in function <[string "safecall Dispatcher[3]"]:4>
[C]:: ?
[string "safecall Dispatcher[3]"]:13: in function '?'
...nit\libs\CallbackHandler-1.0\CallbackHandler-1.0-6.lua:92: in function 'Fire'
...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0-6.lua:124: in function <...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0.lua:115>
...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0-6.lua:394: in function '?'
...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0-6.lua:67: in function <...lUI\Libs\LibArtifactData-1.0\LibArtifactData-1.0.lua:67>