Back in the game, select the pack from the "Available" column to activate it.
: Right-click on the first file (913_RP.part1.rar) and select "Extract Here" or "Extract to [folder name]". The software will automatically pull data from part2.rar and any subsequent parts to rebuild the original file. Installing if it's a Minecraft Resource Pack 913_RP.part2.rar
Do you have of this file, or are you seeing an error message when you try to open it? Back in the game, select the pack from