Will Xamarin Studio 5 work with Xcode 6 Beta? - xamarin-studio

I currently have Xcode 5 and Xamarin Studio 5 installed; the latest stable version releases of both. I would like to install Xcode 6 Beta to try out Swift, but I don't know if it'll mess up Xamarin, which I need to keep functioning.
Can Xamarin Studio 5 and Xcode 6 Beta be installed side-by-side on the same machine?

You can install Xcode 6 beta side by side with Xcode 5. You can use xcode-select to switch between the different versions of command line tools so that it doesn't break your Xamarin stuff.

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VS 2017 on Windows 10 Downgrading to Mono 5.16

I am new to mobile app development and ran into an issue with Mono being upgraded with my VS 2017 in windows 10 machine.
Its now upgraded to Mono 5.18 and it would not pair with the Mac. I cannot upgrade the MAC to have 5.18 (I have tried and failed) as the current code would not compile. We are upgrading the versions in our app currently but right now I want to downgrade my windows 10 VS 2017 to have Mono 5.16.
I dont seem to have a clue on where to download 5.16 Mono and install it. I am unsure if I will need to remove MOno 5.18 from my PC.
Any guidance/pointer with this regard will really help.

Can I use Anypoint Studio 6.0 and 7 at the same time?

We have projects going on and we are developing on AS 6 and I want to test AS 7.0 without breaking the 6 version. Can I run them at the same time? If not should I uninstall 7.0 version and install 6 again when I am done with 7.0 version?
more than Anypoint studio, I would care about which version of mule runtime you are using.
in the latest anypoint version 6.x there is mule runtime 3.9.0
in the latest one for 7. there is mule runtime 4.1.1.
you can install previous mule runtime version from the menu (install new software and add this url: http://studio.mulesoft.org/r5/studio-runtimes/)
If you are on Windows, you can go simply install into two separate folders.
If you are on Linux, I suggest you have two separate installations of eclipse (just unzip eclipse into two separate folders) and install the studio versions as plugins, for example, see this from MuleSoft documentation.
Yes you can have both Anypoint Studio 6 and 7 installed on your PC. They should be in separate install folders. Make sure the Anypoint Studio 7 points to JDK 1.8 or higher version.

Project not working properly after publishing. VB.NET

I have published a mini project in VB.NET 2010, I'm currently using windows 7. The problem is after i transfer it to windows xp(sp2) and install it some of the buttons are not working. It is working properly when I install it to my laptop with windows 7.
Did you try installing .NET Framework 4 on Windows XP? Also you can try to install older versions like 3.5. After installing your program should work.
Download .NET Framework 4 from Microsoft

Will windows phone app with target version 8.0 run on 7 or 7.1?

Initially i developed my windows phone app with version 7.1 but later i upgraded it to target the version 8.0 .
Now my doubt is that will my app work in windows phone 7.1 version??
Thank You in Advance!
No it won't. Keep it in 7.1 if you don't make use of any special features available only in 8.0. Or maintain two project version as explained in Nokia Developer Community Wiki if you need some feature in 8.0 platform but want to keep support for 7.1. You can submit two .XAP version -for WP 8.0 and 7.1- for one application in Windows Phone Marketplace.
You cannot convert a windows phone 8 app to Windows Phone 7.1, but you can target both versions. Details on how the whole process works can be found here.
Hy,
if you have upgraded to 8.0 WindowsPhoone you can no longer perform in WindowsPhone downgrade to 7.1, my advice if you want to continue to develop for both operating systems keep 2 copies of the project

How do I install the Silverlight 4 beta runtime on a test machine without Visual Studio?

Can anyone tell me how to install the Silverlight 4 beta runtime on a test machine without Visual Studio? I keep getting an error message about the beta version being expired....
Thanks.
It turns out that the RC was released days before I attempted this install. After upgrading Visual Studio and my Silverlight application to SL 4 RC (up from the beta) it installed and ran fine on the test machine.