I think you need to craft the armor in the RoC workbench thinger, rather than the normal crafting table.Mod Pack: Horizons
Mod & Version: RotaryCraft 1.6 V19b & Metallurgy-1.6.4-220.127.116.11
Pastebin link to crash log: N/A
Whats the bug? Crafting any RotaryCraft armor with HSLA ingots gives armor from Metallurgy 3 Base. The HSLA Steel Boots are needed to craft the Spring Boots from RotaryCraft.
Can it be repeated? Yes
Known Fix: May be fixed in Minetweaker.