ESP32 FTP server timeout problem

Hello Renzo, I'm having trouble with SimpleFTPServer on an ESP32 DevKit V1 (Wrover module based) Using the esp8266_esp32_SPIFFS.ino Example in the SimpleFTPServer library directories in Ardino 1.8.19. Libraries have been updated recently. When I FTP to the IP address, the Arduino Serial Monitor says: Connected to LOCUST_2 IP address: 192.168.1.117 SPIFFS opened! FTP: Connected! (( about ten second delay )) FTP: Disconnected! The FTP clients say: 220---Welcome to Simply etc etc 530 Timeout 221 Goodbye I've tried FileZilla, WSFTP and windows and linux command line ftp clients, same results. I have applied the #define DEFAULT_STORAGE_TYPE_ESP32 STORAGE_SPIFFS in FtpServerKey.h Any suggestions? And thanks for your wealth of technical magic!! Thanks, Jim