"Error: General Import Failure -7"

My co-worker recently upgraded their Mac OSX version of Adobe Audition from CC 2017 10.0.2 to CC 2018 11.1.0. The install went fine and there were no issues until trying to open a flac file, and get this message:

We thought it was a bad flac so we tried another, same result. Opened up CC 2017, and all the flacs loaded just fine. Aifs, wavs, and all other formats open no problem. Tried Google searching "General import failure", but there was nothing.

This is what the Audition log kept saying:

Ticks = 11461      <140735104978944> <AmioPlugin> <5> An unknown exception was caught (Code 4). Ticks = 11461      <140735104978944> <AmioPlugin> <5> Caught Amio Plug-In Exception when calling command: 5 Ticks = 62844      <140735104978944> <AmioPlugin> <5> An unknown exception was caught (Code 4). Ticks = 62844      <140735104978944> <AmioPlugin> <5> Caught Amio Plug-In Exception when calling command: 5 Ticks = 155725      <140735104978944> <AmioPlugin> <5> An unknown exception was caught (Code 4). Ticks = 155725      <140735104978944> <AmioPlugin> <5> Caught Amio Plug-In Exception when calling command: 5 Ticks = 169994      <140735104978944> <AmioPlugin> <5> An unknown exception was caught (Code 4). Ticks = 169995      <140735104978944> <AmioPlugin> <5> Caught Amio Plug-In Exception when calling command: 5 Ticks = 259901      <140735104978944> <AmioPlugin> <5> An unknown exception was caught (Code 4). Ticks = 259901      <140735104978944> <AmioPlugin> <5> Caught Amio Plug-In Exception when calling command: 5

I have no idea what's going on, and hoping someone can assist. The other thing of note is some previously created favorites no longer work, giving the following error: "The [Favorite] favorite cannot be applied to this file". Note not all of them have this issue, and they work in the previous version.