Add manifest_version to .crx for it to install?

On CD 33.0 with --enable-easy-off-store-extension-install, dragging a .crx onto the Extensions Manager says “This can only be added from the Chrome Web Store.” It was pointed out that the file is missing a manifest_version.

Is there a better way than found in following suggestions?:

Hi ParticleMan,
Does this happen with specific .crx files?
The reason I ask is I have not come across an extension that will not install into Dragon V31.1 using a .crx file, with or without the mentioned switch.


It happens with the attached .crx.

[attachment deleted by admin]

Thanks ParticleMan,
Yes same issue here unfortunately.
I haven’t had this issue before, but I will see what I can find out about it over the next few days.
I will post back if/when I find out anything.

Kind regards.


The problem is the extension’s manifest does not contain a “manifest_version” parameter. Because of this it can’t be installed in Chrome either.


Is there a simple workaround for adding a missing manifest_version? Attempting to copy the unpacked extension hasn’t worked.