Names must be spelled correctly, but upper/lowercase doesn't matter.
XIVDB, the data source for this tool, seems to have changed their API's format again, causing recipes to result in incorrect numbers of materials, often multiplying the "material requirement" exponentially. Since I'm sure you don't want to have to gather 540 Camphorwood Branches when you only need 90, please proceed with caution at this time. Apologies for any inconvenience caused. I will investigate and fix this error as soon as possible.
UPDATE: It looks like XIVDB is working on a tool to do exactly what this tool already did, and looking at their dev blog it looks a lot better than mine =/ Ah well. Here's hoping it works better! If it doesn't, well, I can always reprogram this one...
Tool by Rentho'ra Niet (Cerberus)