Etcher: Etcher doesn't like this image, gives no feedback on why.

[jaxxzer]

I have been preparing Raspberry Pi images in this manner (Ubuntu 16.04):

• SD card with expanded filesystem into the computer.
• Shrink EXT4 partition with GParted
• parted <sd card device> -s print to find End of ext4 partition in MB
• dd bs=1M count=#from parted+1
• right click resulting .img file in nautilus and click compress....zip

Now I have a .img.zip file, etcher has been perfectly happy with these *.img.zip files except for one.

This is the .img.zip file in question. When I select this file from the file browse dialog, etcher behaves as if I had pressed 'cancel'. It returns to the main ui, it still says 'select image', and it gives no feedback on why the image I selected is not showing up. When I unzip this file, etcher lets me select and writes the resulting .img normally, and it functions normally in the Pi afterward. I have also tried compressing the image from the command line using zip with the same results.

Here is another .img.zip prepared in the same manner, that works as expected.

[jaxxzer]

PS: same behavior on Etcher 1.0.0 and 1.1.2.

[jhermsmeier]

Looks like a potential bug in a dependency we use to handle zip files;

buffer.js:829 Uncaught RangeError: Index out of range
    at checkOffset (buffer.js:829)
    at Buffer.readUInt32LE (buffer.js:891)
    at FsRead.readUntilFoundCallback [as callback] (/Applications/Etcher.app/Contents/Resources/app.asar/node_modules/node-stream-zip/node_stream_zip.js:190)
    at FsRead.readCallback (/Applications/Etcher.app/Contents/Resources/app.asar/node_modules/node-stream-zip/node_stream_zip.js:798)
    at FSReqWrap.wrapper [as oncomplete] (fs.js:603)

I'll do some fiddeling to see what's going on with that in detail.

[jhermsmeier]

The zip file itself being faulty can also be ruled out:

$ unzip -v -t Downloads/ardusub-raspbian-0.0.9.img.zip
Archive:  Downloads/ardusub-raspbian-0.0.9.img.zip
    testing: ardusub-raspbian-0.0.9.img   OK
No errors detected in compressed data of Downloads/ardusub-raspbian-0.0.9.img.zip

[jhermsmeier]

Turns out this was an upstream bug that has already been fixed in a newer version, so updating to node-stream-zip to 1.3.7 in https://github.com/resin-io/etcher/pull/1730 will fix this.

[lurch]

Reminds me of the "dinosaur error" we had with lzma a while back ;-)

[jhermsmeier]

Closing as this has been fixed in https://github.com/resin-io/etcher/pull/1730 and will land in the next Etcher release.

[lurch]

@jaxxzer In the meantime, feel free to use https://resin-nightly-downloads.s3.amazonaws.com/etcher/2017-09-22/1.1.2%2Bcb7117a/etcher-1.1.2%2Bcb7117a-x86_64.AppImage