I have still not received any response from FE to either my email or forum posting. In the meantime, I have asked several questions on the ES forum and received timely response to all of them. Guess it will be ES for me; a great little program that does what it claims. BTW, I did learn that ES has a fixed timeout when acting as FTP server. The developer has stated that he will make it user-settable in the next version.
Sprint Galaxy Nexus Android 4.3 rooted RingPlus (Sprint)
gsm Galaxy Nexus Android 4.3 rooted Straight Talk (AT&T)
Hisense Sero 7 Pro Android 4.2 rooted