"Invalid library found" with Arduino IDE 1.6.9 and arduino-esp8266fs-plugin 0.2.0 about arduino-esp8266fs-plugin HOT 10 OPEN

isn't this error coming from Arduino IDE and the libraries that you have installed?

from arduino-esp8266fs-plugin.

Yes. specifically the arduino-esp8266fs-plugin library aka esp8266fs.jar...

from arduino-esp8266fs-plugin.

we had another report similar to what you are saying. Building the plugin from source helped.
What OS are you on?

from arduino-esp8266fs-plugin.

Ubuntu 14.04.03 x64

from arduino-esp8266fs-plugin.

ok so that seems common... the other user also on ubuntu64 Arduino IDE 1.6.9
How should I install the IDE to reproduce this issue?
You can read here on the workaround: #20

from arduino-esp8266fs-plugin.

As the 1.6.9 ide was not available via the package manager I downloaded it and installed it following this guide. Then I copied the FS library to the library directory following the README.
Will check out the workaround.

from arduino-esp8266fs-plugin.

I seemed to have no java DK installed, as make.sh told me "./make.sh: Line 22: javac: Command not found". After "sudo apt-get install default-jdk" (installed OpenJDK-7) it tells me:

pde_path: ../../../opt/arduino-1.6.9/lib/pde.jar
../../../usr/share/arduino-1.5.8/lib/pde.jar
core_path: ../../../opt/arduino-1.6.9/lib/arduino-core.jar
lib_path: ../../../opt/arduino-1.6.9/lib/commons-codec-1.7.jar
../../../usr/share/arduino-1.5.8/lib/commons-codec-1.7.jar
javac: invalid target release: 1.8

Could the older Arduino IDE install be causing the issue? How would I get rid of it?

from arduino-esp8266fs-plugin.

it seems that the default java version on ubuntu64 is 1.7(OpenJDK-7) while on all other OSs is 1.8(OpenJDK-8).
edit this line to replace 1.8 with 1.7 and give it another go?

from arduino-esp8266fs-plugin.

pde_path: ../../../opt/arduino-1.6.9/lib/pde.jar
../../../usr/share/arduino-1.5.8/lib/pde.jar
core_path: ../../../opt/arduino-1.6.9/lib/arduino-core.jar
lib_path: ../../../opt/arduino-1.6.9/lib/commons-codec-1.7.jar
../../../usr/share/arduino-1.5.8/lib/commons-codec-1.7.jar
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/PreferencesData.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
src/ESP8266FS.java:38: error: cannot find symbol
import processing.app.Editor;
^
symbol: class Editor
location: package processing.app
src/ESP8266FS.java:39: error: cannot find symbol
import processing.app.Base;
^
symbol: class Base
location: package processing.app
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/BaseNoGui.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/Platform.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
src/ESP8266FS.java:42: error: cannot find symbol
import processing.app.Sketch;
^
symbol: class Sketch
location: package processing.app
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/SketchData.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
src/ESP8266FS.java:44: error: cannot find symbol
import processing.app.tools.Tool;
^
symbol: class Tool
location: package processing.app.tools
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/helpers/ProcessUtils.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/debug/TargetPlatform.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
src/ESP8266FS.java:48: error: package org.apache.commons.codec.digest does not exist
import org.apache.commons.codec.digest.DigestUtils;
^
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/helpers/FileUtils.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(cc/arduino/files/DeleteFilesOnShutdown.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
src/ESP8266FS.java:56: error: cannot find symbol
public class ESP8266FS implements Tool {
^
symbol: class Tool
src/ESP8266FS.java:57: error: cannot find symbol
Editor editor;
^
symbol: class Editor
location: class ESP8266FS
src/ESP8266FS.java:60: error: cannot find symbol
public void init(Editor editor) {
^
symbol: class Editor
location: class ESP8266FS
src/ESP8266FS.java:114: error: cannot find symbol
private String getBuildFolderPath(Sketch s) {
^
symbol: class Sketch
location: class ESP8266FS
src/ESP8266FS.java:116: error: cannot find symbol
File buildFolder = FileUtils.createTempFolder("build", DigestUtils.md5Hex(s.getMainFilePath()) + ".spiffs");
^
symbol: variable DigestUtils
location: class ESP8266FS
warning: ../../../opt/arduino-1.6.9/lib/arduino-core.jar(processing/app/helpers/PreferencesMap.class): major version 52 is newer than 51, the highest major version supported by this compiler.
It is recommended that the compiler be upgraded.
10 errors
9 warnings

from arduino-esp8266fs-plugin.

You have to delete the alter folder inside it...........
and need to put the correct .h file to run the code nodemcu

from arduino-esp8266fs-plugin.