Arcmap 10.3 addin is not working on 10.2.1

[SibghatUllah1]

I have made an addin using visual studio 2013 and armap10.3 DotnetSDK. It is running fine on 10.3. i want to run this on 10.2.1.I have change the following settings:.
<Targets>
<Target name="Desktop" version="10.2" />
</Targets>
It is installed but when i click on it Arcmap crashes without any error. i have tried on two different systems also. I have also tried by creating a blank form on button click to check but it didn't work and crashes. Plz guide

[DuncanHornby]

AddIns are not backwardly compatible so you cannot run a 10.3 AddIn on a 10.2 or earlier install. The only way to get that addIn running on a 10.2 is to recompile the Addin on a 10.2 machine, but be aware the AddIn may be using objects/code that exist in 10.3 but not in 10.2 so may need to develop a work around.