Hmm....are you saying you can't craft power crystals? If so, do you have the recipe and the ghost item has the "no ..." sign, or don't you even have the recipe? If it's the latter, try crafting a potion crystal, that has always unlocked stuff for me. If it's the former...well, have you actually *made* irisdescent crystals, or did you cheat them in? IIRC, being able to craft power crystals depends on having made iridescent crystals. If it's not that, I don't know. I can't rule out it's a bug, though I'd be careful assuming that it is.
I don't have the fragment for power crystals, so I don't have the recipe (both the power crystal and the lumen leaf fragments are still obfuscated in nei and won't reveal themselves upon picking up a blank fragment). I've made potion crystals already for the upgraded pendants, and I made the iridescent crystal chunks legitimately.
Like I said, it seems to be an issue of stepping up to the ENDGAME research level, as the debug command shows the only research remaining in the PYLONCRAFT level for me is LUMENLEAVES, but that fragment is locked to me still. I went through the code a bit and if I'm reading this at all properly it looks like the lumen leaves fragment is actually revealed in endgame research level, and requires the power crystal achievement (https://github.com/ReikaKalseki/ChromatiCraft/blob/master/Registry/ChromaResearch.java#L187). So unless I've missed something obvious, I feel like something is wrong.
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