I'm not getting the delimiter problem. Make sure that you are running the latest version.
There does appear to be a problem whereby only one user gets added each run, then a '1062 duplicate' error pops up.
This is probably a PHP version issue, I shall debug.

Hold on...I think I finally got it to work!!!

1. based on your suggestion about creating the users
a. I went through the user table and DELETED all users that were 'imported' at some point
b. I went back to CBJUICE

2. I saw on CBJUICE I had an error
--> SAVE Options file
so I clicked on OPTIONS, hit SAVE

3. I tried the import again
--> this time I got an error on a field name (which was misspelled)

4. I fixed the misspelled field name

5. Ran the file again,
and I got it to work!!!
CB Version =2.4
CBJ2_HEADER_VARIABLES are
Array ( [0] => username [1] => firstname [2] => lastname [3] => email [4] => middlename [5] => cb_bio [6] => cb_address [7] => cb_alumni [8] => cb_awards [9] => cb_classes_taught [10] => cb_cv [11] => cb_faculty_type [12] => cb_office [13] => cb_officehours [14] => cb_phone [15] => cb_position [16] => cb_postdoc_visitors [17] => cb_staff_type [18] => cb_website [19] => cb_entity_id [20] => cb_people_type )
Adding rwright1 Rebecca Wright
Adding dnm Dimitris Metaxas
Adding dmotto Douglas Motto
Count of Records Imported=3
Count of Records Used=3

Next I'm going to try it with my full file (I will remove the test records first).

I will keep you posted.

thank you!!!