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Error while updating ADT 23.0.0 in eclipse

I already have gone through this question but it didn't helped.
Update eclipse with Android Development tools 23
While starting eclipse it shows below error.
When I tried with Check for updates - it does nothing.
Then I tried
Help -> Install New Software -> "https://dl-ssl.google.com/android/eclipse/"
It shows below error
Cannot complete the install because of a conflicting dependency.
Software being installed: Android Native Development Tools 23.0.1.1256982 (com.android.ide.eclipse.ndk.feature.feature.group 23.0.1.1256982)
Software currently installed: Android Native Development Tools 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.ndk.feature.group 22.6.3.v201404151837-1123206)
Only one of the following can be installed at once:
ADT CDT Integration 23.0.1.1256982 (com.android.ide.eclipse.ndk 23.0.1.1256982)
ADT CDT Integration 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.ndk 22.6.3.v201404151837-1123206)
Cannot satisfy dependency:
From: Android Native Development Tools 23.0.1.1256982 (com.android.ide.eclipse.ndk.feature.feature.group 23.0.1.1256982)
To: com.android.ide.eclipse.ndk [23.0.1.1256982]
Cannot satisfy dependency:
From: Android Native Development Tools 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.ndk.feature.group 22.6.3.v201404151837-1123206)
To: com.android.ide.eclipse.ndk [22.6.3.v201404151837-1123206]
Can anyone help me for this. Thank you.

Resolved!
Go to help--about eclipse
Uninstall DDMS,ADT etc
Go to install new software and using the link install them:- https://dl-ssl.google.com/android/eclipse/
Worked fine for me :)

Rollback to adt22.6.2, Just replace the tools folder in android sdk.
This is a packaging bug. The entire proguard file is missing. We'll have an update asap, but until then just copy it over from a previous version of the tools:
http://dl.google.com/android/android-sdk_r22.6.2-windows.zip
http://dl.google.com/android/android-sdk_r22.6.2-macosx.zip
So at the end if you started from a new ADT copy by hand the files :)

I was also facing same problem, as nothing was working for me, I simply replaced the entire adt base folder with earlier version (which i installed initially), so now started afresh

I was facing the same problem, was able to solve in this way -
Eclipse-->Help-->About Eclipse---->Installation Details
Select - Android DDMS, ADT, Android Hierarchy Viewer, Android Native Development Tools, Android TraceView and Tracer for OpenGL ES packages. All must be version 22.xx
Uninstall all the plugins selected above.
Restart Eclipse
Install ADT from update site - https://dl-ssl.google.com/android/eclipse/

Adding just an extra bit of information as none of the above solutions worked for me (except for the replacement one)
I just went to
sdk\tools\lib\monitor-x86 (32bit)
Copied configuration, Features and plugins folders and pasted it in ADT\eclipse folder choose skip where it asks to replace and rest will be fine, no need to replace the entire thing
done
once you start eclipse it will ask you for SDK location, provide the location and continue

I also faced similar problem yesterday, I tried the above solution but it was still not working properly. I was facing some errors and difficulty.
So I re-installed Eclipse Luna and then did the following :
Help -> Install New Software
Add -> Name : ADT Plugin
Url -> https://dl-ssl.google.com/android/eclipse/
Download and Install the Plugin and then Update the API's using SDK Manager.
Now I recommend to use Android Studio though.

Android issues with eclipse

I installed the Android SDK installer_r20-windows.exe
When I went to install android tools via eclipse, it displays the error:
Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 22.0.5.v201307292155--757759
(com.android.ide.eclipse.adt.feature.group 22.0.5.v201307292155--757759)
Missing requirement: Android Development Tools 22.0.5.v201307292155--757759 (com.android.ide.eclipse.adt.feature.group 22.0.5.v201307292155--757759)
requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found
What version of eclipse is compatible with android installer_r20-windows.exe?

I was having the same problem with the Linux version of Eclipse 3.8.
The following solution from Google FAQ page worked for me, and as it was quite platform independent, it might help at other platforms too:
1) Select Help > Install New Software...
2) Add the update software site (by clicking Add...) and enter http://download.eclipse.org/releases/indigo [change the last word according to your Eclipse version] for the Location.
3) After adding the update site, try installing Android Developer Tools again, it should download all dependencies now.

installing developer tools in eclipse

I have installed jdk1.7.0_17, then Eclipse Build id: 20100218-1602. I am trying to get the plug-in Android DDMS from http://dl-ssl.google.com/android/eclipse and keep getting the same response. This is what I get (com.android.ide.eclipse.hierarchyviewer.feature.group 21.1.0.v201302060044-569685)
Missing requirement: Android Hierarchy Viewer 21.1.0.v201302060044-569685 (com.android.ide.eclipse.hierarchyviewer.feature.group 21.1.0.v201302060044-569685) requires 'org.eclipse.ui 3.6.2' but it could not be found.
Is this tool already installed or how do I resolve this issue?
Does anyone know how to help me get this

You must download the adt first it's seems like you using eclipse so please select help->install new software then isntall the adt using this link https://dl-ssl.google.com/android/eclipse/ full guide avaible here ->http://developer.android.com/sdk/installing/installing-adt.html

Your Eclipse version is too old. Build id 20100218-1602 is definitely before Eclipse 3.6.2, which is a minimum requirement for the ADT. You should really take the all-in-one-bundle from the Android developer site, if you are not aware of these dependencies.

Android ADT Installation Error

I'm using Ubuntu 11.10 and installed Eclipse from the Ubuntu Software Center. Here's the information of the Eclipse I've downloaded. I have Java SDK 6 and 7, but Eclipse is configured to use the Java SDK 6.
Version: 3.7.0
Build id: I20110613-1736
I was about to install the ADT plug-in on Eclipse when after hitting the first Next button in the installation these error telling me I can't install the ADT unless:
Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534)
Missing requirement: Android Development Tools 16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534) requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found
How can I resolve this problem?
Thanks in advance.

The first recommendation is to NOT install Eclipse from any Linux package manager or software repository. Instead, just get it from http://www.eclipse.org/downloads/. The builds that linux distro's install are often modified (mangled, some would say).
The particular error you're getting is because ADT requires part of the Eclipse WST project features, but the update sites you have configured don't include WST. Getting one of the packages directly from http://www.eclipse.org/downloads/ will solve that, along with knowing exactly what you've got (as opposed to relying on whoever assembled the package for Ubuntu).

I had similar problems and the above answer did not work, in this case try:
deleting workspace directory
check running eclipse as root (just for duration of this ADT install)
for more info see posts halfway through this thread:
http://androidforums.com/galaxy-nexus-all-things-root/466275-having-trouble-installing-adt-plugin.html

how to install ADT16.0.1 pulgin in Eclipse3.5

whenever i am trying to install ADT plugin , i am getting below error,
Cannot complete the install because one or more required items could
not be found.
Software being installed: Android Development Tools
16.0.1.v201111031820-219398 (com.android.ide.eclipse.adt.feature.group
16.0.1.v201111031820-219398)
Missing requirement: Android Development Tools
16.0.1.v201111031820-219398 (com.android.ide.eclipse.adt.feature.group
16.0.1.v201111031820-219398) requires 'org.eclipse.wst.sse.core 0.0.0'
but it could not be found
I am working with window 7.
I have tried with Archive also but still getting same error.
How can i use Android in my eclipse?
What i will do?

1)First Install the ADT15.0.1 plugins but don't delete it & Upgrade to ADT 16.0.0 or ADT 16.0.1
2)Plz go to the SDK Manager.Exe in androidsdkwindows folder see whether it is updated SDK or not if not install once again.
3)See the Android Support v4 jar file installed or not if not installed from the SDK Manager
and configure the library path.
It will Definitely work!!!

Seems to be an issue with your eclipse installation. With a little bit of googling I found this: http://androidcommunity.com/forums/f4/missing-org-eclipse-wst-sse-core-0-0-0-while-installing-sdk-for-eclipse-3-5-a-28714/