FMOD Error 18

FMOD Engine
1 
mpStudioSystem->initialize(32, FMOD_STUDIO_INIT_NORMAL, FMOD_INIT_NORMAL, NULL)
FMOD::Studio::Bank* pBank;
mpStudioSystem->loadBankFile("Sound/Master.bank", FMOD_STUDIO_LOAD_BANK_NORMAL, &pBank);
FMOD::Studio::Bank* pBankStrings;
mpStudioSystem->loadBankFile("Sound/Master.strings.bank",FMOD_STUDIO_LOAD_BANK_NORMAL, &pBankStrings)

I am constantly getting FMOD ERROR 18 while trying to load bank files. The Bank file is in the same location as a sample media file (Sound/bgmusic.ogg). I can load and play the background music just fine using LoadSound and path string “Sound/bgmusic.ogg”. However when I try to load the bank files in the same location it gives me this error. What am I missing?

I am working with Fmod engine without unity in a visual cpp game project.