Hi Karin,
From the error message
"Failed to render "Wiki Content" column because of an error in the "Multiple lines of text" field type control" I suspect that the multiline field has some special characters (double quotes, ampersands, etc).
Please create a test list with the same structure as the list you want to expose and add some "clean" test records (no special haracters) and try it again.
Please let me know how it goes.