Error programming Wi-F-

We are running Arduino IDE software to program Wi-Fi's. On one computer Adafruit Huzzah esp8266 is the board being used. That setup is working. We are trying to set up a second computer and can only find Adafruit feather Huzzah esp8266. That setup is not working. Can anyone tell me the difference and what we can do to remedy the situation. Below is the error message we get. Any help would be appreciated.

Thanks,
Frank

Arduino: 1.8.2 (Windows 7), Board: "Adafruit Feather HUZZAH ESP8266, 80 MHz, Flash, Disabled, 4M (no SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200"

In file included from C:\Users\Warehouse05\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.0\libraries\ESP8266mDNS\src/ESP8266mDNS.h:46:0,

from C:\Users\Warehouse05\Desktop\WiFionAERBridgeV2_6_29_2017\WiFionAERBridgeV2_6_29_2017.ino:17:

C:\Users\Warehouse05\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.0\libraries\ESP8266mDNS\src/LEAmDNS.h:111:27: fatal error: PolledTimeout.h: No such file or directory

#include <PolledTimeout.h>

^

compilation terminated.

exit status 1
Error compiling for board Adafruit Feather HUZZAH ESP8266.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

fmira:
On one computer Adafruit Huzzah esp8266 is the board being used. That setup is working. We are trying to set up a second computer and can only find Adafruit feather Huzzah esp8266.

This indicates you're using an older version of ESP8266 core for Arduino on the first computer. The board name was changed in ESP8266 core for Arduino version 1.4.1. So you must have version 1.4.0 or older on the first computer, while I can see from your output that you have version 2.5.0 on the second computer. You can find the installed version of ESP8266 core for Arduino by looking in Tools > Board > Boards Manager.

fmira:
C:\Users\Warehouse05\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.0\libraries\ESP8266mDNS\src/LEAmDNS.h:111:27: fatal error: PolledTimeout.h: No such file or directory

#include <PolledTimeout.h>

^

This is odd. PolledTimeout.h should be located at C:\Users\Warehouse05\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.0\cores\esp8266. Please check if that file is located in that folder. Note that C:\Users\Warehouse05\AppData is a system folder, which Windows likes to hide from you by default. You might find it easiest to access C:\Users\Warehouse05\AppData\Local\Arduino15 by clicking the link at the line following File > Preferences > More preferences can be edited directly in the file.

If the file is not present in that folder, it indicates a problem with your installation of ESP8266 core for Arduino. You can remove and then reinstall it via Tools > Board > Boards Manager.