Error when adding form responses in an existing response file

Question

Following the announcement of the retirement of FormsCentral, I am testing Acrobat XI Pro to distribute PDF forms.
I followed the steps proposed in this tutorial: https://acrobatusers.com/tutorials/how-to-distribute-existing-pdf-forms
Everything works fine until I try to add the responses in an existing response file. I select the received files in the dialog box an when I clik on "OK" the progress bar appear then Acrobat Pro freezes.
I tried different forms, all exported from FormsCentral and still encouter this bug/issue.
Any hint?

Answer 1

These are the current privs for that user:
ALTER DATABASE
ALTER SESSION
ALTER USER
CREATE ANY CONTEXT
CREATE ANY DIRECTORY
CREATE CLUSTER
CREATE DATABASE LINK
CREATE DIMENSION
CREATE INDEXTYPE
CREATE JOB
CREATE LIBRARY
CREATE MATERIALIZED VIEW
CREATE OPERATOR
CREATE PROCEDURE
CREATE PUBLIC SYNONYM
CREATE ROLE
CREATE SEQUENCE
CREATE SYNONYM
CREATE TABLE
CREATE TABLESPACE
CREATE TRIGGER
CREATE TYPE
CREATE USER
CREATE VIEW
DROP ANY DIRECTORY
DROP PUBLIC SYNONYM
DROP TABLESPACE
DROP USER
EXECUTE ANY PROCEDURE
SELECT ANY DICTIONARY
SELECT ANY TABLE
UNLIMITED TABLESPACE