GWT Developer plugin for Chrome and Internet Explorer - error preventing installation

I am also trying to run in Explorer (version 11) and it requires me to download the GWT Developer plugin for Firefox.

To avoid that, open IE11 dev tools and under the "Emulation" menu change the "Document mode" from "Edge" to "10". The page should refresh and from there you should be able to install the GWT plugin for IE.

Once it's installed you can fall back to the "Edge" document mode.

Worked for me.

But as @apanizo said, I'd use the Super Dev Mode if possible. The dev mode is already not supported anymore in the latest firefox and it is going to be the same for the upcoming Chrome 35. No clue about IE though.

Enable the GWT Developer Plugin in Chrome.

Check for other plugin that is installed on Chrome.

Click on plugins for other systems to get more GWT Developer plugins.

Here is the URL for GWT missing-plugin.

Click on required GWT plugin and simply click on save button as shown below for IE9.

This might be useful for you:

1. Create shortcut Chrome to desktop.
2. Right click to shortcut and choose properties.
3. Click to Compatibility tab
4. Inside Compatibility mode check "Run this compatibility mode for:" and choose Window 7.
5. Apply and Ok.

Source: https://code.google.com/p/google-web-toolkit/issues/detail?id=7778