@ zoomx
Thank you.
Testing your "Observations_SPIFFS_20170704.ino" I have been unable to open web pages; /Weather, /SdBrowse, or /Graphs. Have you experience this in your testing? Is there a conflicting library?
"Observations_SPIFFS.ino" uses ESP8266Wifi library for both client and server, without your modifications; /Weather, /SdBrowse, and /Graphs web pages open. I even tried with just listen function in loop; still your version does not open web pages.
Do you have a later version for testing?
William