Unable to receive Master Leatherworker IV Book

Time: ALL THE TIME
Frequency: 100%
World name: Goblin
Character name: Gabriel
NPC name: Scrip Exchange
Class/Level: LWK 60
Party or solo: Solo
In-game time: 10:05 CST
Area and coordinates: Idyllshire ( 5.7 , 7.0 )

1. I present 720 Blue Crafting Scrip to the Scrip Exchange vendor in Idyllshire for the Master Leatherworker IV book.
2. Received Message "Unable to complete transaction. You cannot carry more of this untradeable item"
3. Search for Item in player and retainer inventory - No Items Found.
4. I check my Master (2) tab under Leatherworker and I do not have these recipes.