Visual Studio 2017 XamarinInspectorPackage package did not load correctly

JoeMo

Related: https://forums.xamarin.com/discussion/85275/visual-studio-2015-inspectorpackage-package-did-not-load-correctly
I was working just fine yesterday but when I tried to open my solution today I got this error. How do I fix this?

Log:

745
2017/08/31 12:45:35.424
Warning

VisualStudio
Unexpected system error mode before loading package [XamarinInspectorPackage]
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}


746
2017/08/31 12:45:35.424
Information
VisualStudio
Begin package load [XamarinInspectorPackage]
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}


747
2017/08/31 12:45:35.458
Error
VisualStudio
LegacySitePackage failed for package [XamarinInspectorPackage]Source: '' Description: The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) System.ArgumentException: The parameter is incorrect. (Exception from HRESULT: 0x80070057 (E_INVALIDARG)) at EnvDTE.SolutionBuild.get_StartupProjects() at Xamarin.VisualStudio.Inspector.XamarinInspectorPackage.GetStartupProject() in C:\d\lanes\4699\fec6f88f\source\xamarinvs\src\Features\VisualStudio.Inspector\Vsix\XamarinInspectorPackage.cs:line 272 at Xamarin.VisualStudio.Inspector.XamarinInspectorPackage.RefreshInspectorSession() in C:\d\lanes\4699\fec6f88f\source\xamarinvs\src\Features\VisualStudio.Inspector\Vsix\XamarinInspectorPackage.cs:line 132 at Xamarin.VisualStudio.Inspector.XamarinInspectorPackage.Initialize() in C:\d\lanes\4699\fec6f88f\source\xamarinvs\src\Features\VisualStudio.Inspector\Vsix\XamarinInspectorPackage.cs:line 99 at Microsoft.VisualStudio.Shell.Package.Microsoft.VisualStudio.Shell.Interop.IVsPackage.SetSite(IServiceProvider sp)
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}

---

80070057 - E_INVALIDARG



748
2017/08/31 12:45:36.388
Error
VisualStudio
SetSite failed for package XamarinInspectorPackage
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}

---

80070057 - E_INVALIDARG



749
2017/08/31 12:45:36.398
Error
VisualStudio
End package load [XamarinInspectorPackage]
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}

---

80070057 - E_INVALIDARG

SandyArmstrong

Hi! Can you go to Help -> About Visual Studio and let me know what version of the Xamarin extension is installed?

I believe this is fixed in Xamarin 4.7 (which will be part of VS 15.4).

I believe this can be worked around by disabling Lightweight Solution Load (https://docs.microsoft.com/en-us/visualstudio/extensibility/lightweight-solution-load-extension-impact). If that doesn't work, go into the Visual Studio Installer and completely remove "Xamarin Workbooks" to prevent the Inspector extension from doing any work when you next launch VS.

JoeMo

Thanks for the quick response. It says that I'm running 4.5.0.486.
I'll try the workaround.

Do you think the fix will be backported? Doing a minor upgrade pose a great risk as, by experience, there's usually regressions being introduced that cause more trouble.

SandyArmstrong

Unfortunately, this fix was not approved for backporting.

If you do disable Lightweight Solution Load, and the bug still occurs, please let me know, as that could indicate it's actually a new bug.

MartinGarins

Lightweight Solution Load NOT enabled here.

I get the same error using Visual Studio 15.4.0 Preview 1.0

No error using Visual Studio 15.3.2

SandyArmstrong

@MartinGarins you get the same ArgumentException from get_StartupProjects()?

MartinGarins

No I don't.

747
2017/09/06 18:05:31.679
Error

VisualStudio
LegacySitePackage failed for package [XamarinInspectorPackage]Source: 'Xamarin.VisualStudio.Inspector' Description: Value cannot be null. Parameter name: remoteServerProvider System.ArgumentNullException: Value cannot be null. Parameter name: remoteServerProvider at Xamarin.VisualStudio.Inspector.VSInspectorSession..ctor(Project proj, IRemoteServerProvider remoteServerProvider, IServiceProvider serviceProvider) in C:\d\lanes\5156\ddd8750f\source\xamarinvs\src\Features\VisualStudio.Inspector\Vsix\VSInspectorSession.cs:line 59 at Xamarin.VisualStudio.Inspector.XamarinInspectorPackage.RefreshInspectorSession() in C:\d\lanes\5156\ddd8750f\source\xamarinvs\src\Features\VisualStudio.Inspector\Vsix\XamarinInspectorPackage.cs:line 199 at Xamarin.VisualStudio.Inspector.XamarinInspectorPackage.Initialize() in C:\d\lanes\5156\ddd8750f\source\xamarinvs\src\Features\VisualStudio.Inspector\Vsix\XamarinInspectorPackage.cs:line 112 at Microsoft.VisualStudio.Shell.Package.Microsoft.VisualStudio.Shell.Interop.IVsPackage.SetSite(IServiceProvider sp)
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}

---

80004003 - E_POINTER



748
2017/09/06 18:05:31.709
Error
VisualStudio
SetSite failed for package XamarinInspectorPackage
{91D3BF5A-049A-4C78-AF4B-9AC149ADD84B}

---

80004003 - E_POINTER

SandyArmstrong

@MartinGarins thanks for checking. That's a different bug that is fixed in 15.4 preview 3.

MartinGarins

No problem. You are welcome.

PaulRead

Lightweight Solution Load NOT enabled here.

I get the same error using Visual Studio 15.4.0 Preview 2.0

Any idea when Preview 3 will be available? Or a work around fix?

SandyArmstrong

Preview 3 and 4 are already released, so closing this.