CODEWITHSUNDEEP
visual-studio-2013xamarinvisual-studio-2015xamarin.forms
FredyWenger
FredyWenger

Reputation: 2325

Xamarin.Forms project cannot be opened in VS2013 after install VS2015

I have a Xamarin.Forms project based on the shared template and VS2013. I first have updated my machine from Win 8.1 to Win 10. After doing that, I have tested the projects to my VS2013 installation. All projects including the .forms project have worked without problems. Then I have installed VS2015 (unter Win 10).
After doing that, I cannot open my .forms-project unter VS2013 anymore.

Error message (translated to English):
Title: Check changes on project and solution.
This projects are not supported or there are changes needed that influences the project behavior so that the projects can be opened in this version of Visual studio. Changes are automatically applied, so that the behavior is not influenced.

Not supported:
- Android-project
- iOS-Project

So… it seems as something from the VS2015 installation causes this error message in VS2013.

What do I have to do, to bring my project unter VS2013 to work again?

Upvotes: 2

Views: 524

Answers (1)

FredyWenger
FredyWenger

Reputation: 2325

Done...
First, I have tried to remove the VS2013 add-on package “Get Xamarin” and reinstall the add-on package "Xamarin" (what - I think so - should be the new name of the Xamarin integration SW package).
This has not worked... The installation then have crashed and showed a form with download-links for each piece of SW (including the Integration-SW Xamarin V3.11.1589). I then have downloaded only the .msi to V3.11.1589 and started it.

By the setup, I was able to select the VS-Version where to install the SW (selected VS2013 as under VS2015 the SW already was installed). After the installation, I was able again to open my project under VS2013 without error-message. As I only had the chance to install the newest IS version and the newest V3.11.1589 have dependencies on the MAC (MAC OS at least Mac OS X 10.10.5, XCode at least 7, Xamarin.iOS at least 9.1), I was not able to connect to the MAC BH and had to update the MAC first to XCode 7.1 and the latest Xamarin Studio (about 4,5 gig to install).

After doing that, I have rebooted the MAC and also my PC, un-paired and re-paired the MAC Build Host with my PC and then was able to work again with my VS2013 installation.

Conclusion:

  • It seems, as the installation of VS2015 with Xamarin (at least on Win 10) removes an already installed Xamarin on an already installed VS2013, so that the Xamarin projects cannot be opened anymore.

  • If VS2015 is installed (with Xamarin option), the Xamarin Integration SW V. V3.11.1589 is installed to VS2015 (today). This is also the latest “stable” release on the Xamarin page (but I don’t have found a dedicated download-link for the .msi on the Xamarin pages).
    So… as I think, that for VS2015 the latest “official” version should be used, I think, you also should install the latest version for the older VS version (so that you are able to develop with the “old” VS version but also to migrate your project to VS2015 what should be the target normally).

  • But, if you want to use this version (V3.11.1589) you also have to update XCode and Xamarin Studio on the MAC (what - depending on your Internet connection - can take a few hours).

So… if you have the same problem, I suggest you to:

  • Search for the .msi to V3.11.1589 and install it (select only your “old” VS-Installation in the setup). As I don’t have found a download link, I have posted in this thread (I think that an answer from Xamarin with a download-link should be added soon)

  • Update the MAC to XCode 7.1 and Xamarin Studio to the latest stable version (Xamarin.iOS, Version: 9.1.0.27)

  • Unpair the Build Host in the MAC
  • Reboot MAC and your development PC
  • Re-Pair the Build Host

After doing that, my VS2013 installation (Xamarin.Forms project) now works again.

Upvotes: 1

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