Guild Wars 2

The first picture says what I need to make the dynamic tempered spinal blades.

It says

Gift of wine. (Bottle of elonian wine???)
Tempered spinal blades- backpiece
The Dynamic assault knight power core
And at last… Incandescent dust

Problem is, the last screenshot, shows that everything but the dust is able to be combined… Bug in recipe??

Did you try putting the dust in first? Or, trying a different tier of dust? Sometimes, the forge is particular, and sometimes, the recipes call for the wrong kind of dust.

The recipe works with crystalline dust, clearly a tooltip error in the recpie