Deviland
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Posts: 2
Joined: 03 Oct 2019, 19:53

Crash when initing App on macos [Managed SDK version 2.2.5]

03 Oct 2019, 20:31

Hello.

I'm trying to run the sample projects from the Managed SDK version 2.2.5 on Visual Studio 2019 for macos but they crash instantly when initing the App with the following exception:
Could not set up parent class, due to: Generic type definition failed to init, due to: VTable setup of type Noesis.UICollection`1[T] failed assembly:/NoesisGUI-ManagedSDK-2.2.5/Src/Samples/UserControl/Projects/osx/bin/Debug/UserControl.app/Contents/MonoBundle/Noesis.GUI.dll type:UICollection`1 member:(null) assembly:/NoesisGUI-ManagedSDK-2.2.5/Src/Samples/UserControl/Projects/osx/bin/Debug/UserControl.app/Contents/MonoBundle/Noesis.GUI.dll type:UICollection`1 member:(null)

Any solution for this problem?

Thank you.

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hcpizzi
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Joined: 09 Feb 2012, 12:40

Re: Crash when initing App on macos [Managed SDK version 2.2.5]

04 Oct 2019, 17:05

Hi Deviland,

Could you provide us with the following details?
- Visual Studio version
- Xamarin.Mac version
- XCode version
- OS X version
- The project you're trying to run

Thanks
Last edited by hcpizzi on 04 Oct 2019, 18:27, edited 1 time in total.
 
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hcpizzi
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Re: Crash when initing App on macos [Managed SDK version 2.2.5]

04 Oct 2019, 17:41

A quick update. I just tested with Visual Studio for Mac version 8.3.1 (build 18) and the Xamarin.Mac version 6.2.0.42 and I'm having the same issue. I wasn't seeing it before upgrading. Let me see if I can figure out what the problem is.
 
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hcpizzi
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Re: Crash when initing App on macos [Managed SDK version 2.2.5]

04 Oct 2019, 18:22

Another update: Downgrading Xamarin.Mac to version 5.8.0.0 seems to avoid the issue. As a workaround, until we figure out if the problem is on our side or theirs, you can try downgrading.

I already had it installed, so all I had to do was to change the symlink /Library/Frameworks/Xamarin.Mac.framework/Versions/Current to point to /Library/Frameworks/Xamarin.Mac.framework/Versions/5.8.0.0 instead of to /Library/Frameworks/Xamarin.Mac.framework/Versions/6.2.0.42

Can you confirm you're on the 6.2 version of Xamarin.Mac too?

Thanks
 
Deviland
Topic Author
Posts: 2
Joined: 03 Oct 2019, 19:53

Re: Crash when initing App on macos [Managed SDK version 2.2.5]

05 Oct 2019, 01:21

Hello, thank you for the response.

Unfortunately right now I can't test with an older version of Xamarin.Mac. I will wait for an update to this library that corrects the problem and then try again.
If it helps, here are the versions I'm using:
Visual Studio 8.3.1 (build 18)
Xamarin.Mac 6.2.0.42
XCode 11.0 (11A420a)
macOS 10.14.6

The problem is happening with every single sample program.
 
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hcpizzi
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Re: Crash when initing App on macos [Managed SDK version 2.2.5]

07 Oct 2019, 20:39

Hi Deviland,

I'm glad to let you know we've figured out the problem and it will be fixed in the next release. It's a problem with the implementation of IList<T> in UICollection. For some reason the latest version of Xamarin.Mac doesn't like the way it's implemented, even though it doesn't seem to be a problem elsewhere. But we've improved the code and now it works without issue.

I'll let you know once the new nugets are up.

Sorry for the inconvenience.

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