A fatal DirectX error has occurred.(100000000)

I recently downloaded FFXIV after a few months of not playing and now I can't run it because of this DX error: A fatal DirectX error has occurred.(100000000)

Comp Specs
Pentium i7
2x AMD R9 270x GPUs
16Gb RAM
4.5TB HDD
Windows 8.1 64 bit

I have no hardware errors and DXDiag says nothing is amiss.

Try running the DX installer
http://www.microsoft.com/en-us/downl...ils.aspx?id=35

Also check that you have the latest AMD drivers.

Quote:

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Originally Posted by Nekodar

Try running the DX installer
http://www.microsoft.com/en-us/downl...ils.aspx?id=35

Also check that you have the latest AMD drivers.

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That was the first few things I tried with no success.