Flashing a known app crashes the CLI

[suda]

Running:

$ particle flash MY_DEVICE tinker

crashes with:

attempting to flash firmware to your device MY_DEVICE
Flash device failed
TypeError: Cannot convert undefined or null to object
    at Object._addFilesToCompile (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/oldlib/ApiClient.js:537:21)
    at Object.flashDevice (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/oldlib/ApiClient.js:474:8)
    at flashyFlash (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/commands/CloudCommands.js:382:16)
    at runTask (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/pipeline.js:34:12)
    at /Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/pipeline.js:42:12
    at tryCatchResolve (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/lib/apply.js:46:23)
    at callAndResolve (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/lib/apply.js:30:12)
    at callAndResolveNext (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/lib/apply.js:40:4)
    at Fold.fulfilled (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/lib/makePromise.js:767:11)
    at tryCatchReject (/Users/suda/.nvm/versions/node/v6.9.4/lib/node_modules/particle-cli/node_modules/when/lib/makePromise.js:845:30)

[hwestbrook]

I have this same issue. If someone else comes here looking for a fix, the fix is to downgrade the cli to v1.18.0 via npm install -g particle-cli@1.18.0