Copper Mozilla plugin doesn't work on 56.0.1 (64 bit) - mozilla

I installed Copper on Mozilla version 56.0.1 but it didn't show up any Copper GUI.

The Copper is not compatible with Mozilla version 56.0.1. I used Mozilla version 55.0.2 and it worked.

Mozilla doesn't support some addons anymore with new realeses. You can check older version (55.0.0 was working for me). Then, You should unpicked auto-update from settings.

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Unable to install Firefox OS Simulator on Firefox WebIDE in Linux

I can not install Firefox OS Simulator in Firefox (60.0.2 (64-bit) Mozilla Firefox for Linux Mint-1.0).
I am trying to install Firefox OS Simulator in Firefox WebIDE. I have Linux Mint 18 Sarah, MATE 64-bit.
sorry about my English.....
I found the solution for my Problem.... Firefox OS simulator is not more supported . But there is gut Information ..., there isToggling Responsive Design Mode , it work similar as Firefox OS simulator .You can open it above in Toolbar on Tools +
Web Development + Responsive Design Mode and it very easy to working.....
Und it use less resources as Mobile Browser Emulator from Chrome....
A Screenshot how to see it on a "Google Nexus 5"....
Screenshot from "Google Nexus 5"

TortoiseSVN version for windows XP

Which is the latest version of TortoiseSVN is compatible with Windows XP service pack 3?
I just installed its latest build 1.9.3 but unfortunately it's not supported in windows XP.
1.8.12 is the latest release in branch 1.8, 1.8.10 was released because 1.8.9
BUG: Fails to run on Windows XP.
and, btw, 1.8.11 had a lot of important bugfixes (contrary to minor corrections in 1.8.12)
TSVN 1.8.x are the latest versions that support Windows XP, because Subversion 1.9 removed XP support. So get the latest version 1.8.9 from sourceforge.
You have to download v 1.7
Here is the link:
https://sourceforge.net/projects/tortoisesvn/?source=typ_redirect

Installing GWT Developer Plugin on Linux

I have a sample app in GWT. When I run it and open in my Firefox - the browser still displays this:
Even if GWTP Developer plugin is sucessfully installed
My Firefox version is 25.0 (on Fedora 20), I know that the new versions of Firefox have problem with GWT plugin, but this version should be probably ok. What is the problem?
It's a known problem. Check this out: http://code.google.com/p/google-web-toolkit/issues/detail?id=8423
The solutions proposed there are to either:
download a special plugin that they've made for this bug
yum removing firefox and xulrunner and installing Firefox 25 from
ftp://ftp.mozilla.org/pub/firefox/releases/25.0/linux-x86_64/en-US/
You can also try upgrading to firefox 26, as the support was removed
in 27 and 26 should work fine with the normal plugin.

How to return Dragonfly from Opera 12 to Opera 17?

I've just installed Opera 17. I'm going to cry.. How can i return Dragonfly debugger into this version of Opera from older version? T_T
Opera Dragonfly doesn't exist in Opera since version 15, and has been replaced with Chromium developer tools (Inspect Element).
You can still use it, just install the latest Presto version of Opera (12.16) Just like me :) cause i love opera dragonfly.

Can I install Xcode 4.2 on OSX 10.6.8 (Snow Leopard)?

My Mac has snow leopard version 10.6.8. I have installed Xcode 3.2.5, can I update to xcode 4.2 with my present OS version?
Yes, you can. 4.2 is the last XCode version that supports Snow Leopard, you'll need a later OS version to use anything newer. You'll need a developer account to download it from Apple however. I'm not saying that you NEED to download it from Apple though. I leave the rest to your imagination.
No, not possible, you need the latest version of Mac OSX: Snow Lion (10.8) to run xCode 4.2.
Luckily, the upgrade isn't that expensive, and is said to be worth the money (have bought the upgrade already, but not installed it myself :-) )

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