Having the same issue.

@alexcroox @jgknott does an npm rebuild fix the issue? If not, more information about your setup and steps to reproduce this is necessary...

npm rebuild didn't work for me.

Here's the error I'm getting:

keytar.node'
was compiled against a different Node.js version using
NODE_MODULE_VERSION 48. This version of Node.js requires
NODE_MODULE_VERSION 51. Please try re-compiling or re-installing
the module (for instance, using `npm rebuild` or`npm install`).
    at process.module.(anonymous function) [as dlopen] (ELECTRON_ASAR.js:173:20)
    at Object.Module._extensions..node (module.js:598:18)
    at Object.module.(anonymous function) [as .node] (ELECTRON_ASAR.js:173:20)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)
    at Module.require (module.js:498:17)
    at require (internal/module.js:20:19)
    at /Users/jknott/Dropbox (Personal)/dev/ottter/desktop/node_modules/keytar/lib/keytar.js:1:161
    at Object.<anonymous> (/project/node_modules/keytar/lib/keytar.js:55:2)

I'm on node 6.10 and npm 4.2.0

I'm on node 6.10 and npm 4.2.0

These seem recent enough. Any thoughts @BinaryMuse on why they might still be seeing this error?

Unless I'm mistaken, npm rebuild will just rebuild the module against Node's version, not Electron's. You'll need to use one of the methods in the Using Native Node Modules documentation.

I'm running node 7.6.0 and npm 4.1.2

@BinaryMuse that solved it! Thank you!
Steps for mac:
npm install --save-dev electron-rebuild
./node_modules/.bin/electron-rebuild
I got some errors, on some packages but the keytar worked fine and now i'm able to run the app.

Does this mean the dev environment needs to be setup on each target OS and the module rebuilt on each? Or does a rebuild once on Mac cover all OS's?

Does this mean the dev environment needs to be setup on each target OS and the module rebuilt on each?

@alexcroox yes, because the native toolchain is OS-dependent

Hi, i am new in using the firmware and i encounter the problem as below :
The module '\?\C:\Users\user.atom\packages\Pymakr\precompiles\serialport-win\build\Release\serialport.node'
was compiled against a different Node.js version using
NODE_MODULE_VERSION 49. This version of Node.js requires
NODE_MODULE_VERSION 53. Please try re-compiling or re-installing
the module (for instance, using npm rebuild ornpm install).

May i know how can i fix it? Thanks

@liowmei Read the comment of @BinaryMuse and @jgknott ;)
I am using serialport too, and this worked like a charm !

delete node_module and run npm i

Can somebody send steps to resolve issue in Windows?

@massi67 did you try what @Arthaclarius said?

the same issue !, please any suggestion

Hi, folks,

Please see the comment that I posted earlier. You'll need to follow the instructions on the Using Native Node Modules page on the Electron site. I personally use and recommend the strategy described in Installing modules and rebuilding for Electron, which describes how to fix this problem with the electron-rebuild package.

Since the original issue is solved, I'm going to lock this issue. If you have a different problem, or have tried the above steps and it doesn't work, then please create a new issue and we can work to resolve it separately.