When downloaded from CurseForge, the assets .PNG files are corrupted and the textures show up as the default "Missing Texture" magenta/black checkered texture. "PNG file corrupted by ASCII conversion", according to Photoshop. The assets in the repo does however work.

good catch..i'm stumped as to why this happens..every time i build now, it copies corrupted pngs to the final jar..i don't know why

Similar to this issue: p455w0rd/WirelessCraftingTerminal#361

finally figured out a workaround...