# When app builds in Fusetools, it just shows whitescreen instead of the app

**URL:** <https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501>\
**Category:** Bug Reports\
**Created:** [November 5, 2018, 6:39pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501 "2018-11-05T18:39:02Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Caleb\_Strong](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/caleb_strong/32/515_2.png) [@Caleb\_Strong](https://forums.fusetools.com/u/Caleb_Strong)\
**Post date:** [November 5, 2018, 6:39pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/1 "2018-11-05T18:39:03Z")

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I just started a new app, and when it builds successfully, its just a white screen. I found another thread talking about this, and used uno build -r -tdotnet and it does run and the app builds and displays correctly in that outside window, but in that thread there was never a solution to solving the original problem. Obviously that was for fuse 1.0.1, and it has come a long way since then, am I missing something? I would much rather have live updates on my app rather than having to re-run that console command each time, as well as I would like to try out the layout editor that Fuse offers.

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**Author:** ![aeq](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/aeq/32/129_2.png) [@aeq](https://forums.fusetools.com/u/aeq)\
**Post date:** [November 5, 2018, 6:59pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/2 "2018-11-05T18:59:37Z")

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Hey Caleb, FYI, you gotta give us more info and perhaps some code?

Which fuse version, system OS, target mobile OS, command used, etc.

A white screen could be a missing splash, but since its a new app, could be a missing tag in your code.

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<div class="post-metadata">

**Author:** ![Caleb\_Strong](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/caleb_strong/32/515_2.png) [@Caleb\_Strong](https://forums.fusetools.com/u/Caleb_Strong)\
**Post date:** [November 5, 2018, 7:14pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/3 "2018-11-05T19:14:27Z")

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I am running Windows 10, Fuse version is the latest, so v1.9.0, its set on iPhone 6/7 as the preview. The command was just to build normally, except the command I run to make it work on a separate preview which is ‘uno build -r -tdotnet’ I believe. And my code, it is basically the bare bones just a MainView ( I don’t know if you want me to link it because I dont remember how to make it look like code in here but I’ll put it below irregardless), and then just 2 pages that only have plain text on them.

Here is main view:

\<App\>

\<Router ux:Name=“router” /\>

\<ClientPanel\>

\<Navigator DefaultPath=“welcome”\>

\<Welcome ux:Template=“welcome” router=“router” /\>

\<Login ux:Template=“login” router=“router” /\>

\</Navigator\>

\</ClientPanel\>

\</App\>

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<div class="post-metadata">

**Author:** ![aeq](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/aeq/32/129_2.png) [@aeq](https://forums.fusetools.com/u/aeq)\
**Post date:** [November 5, 2018, 8:25pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/4 "2018-11-05T20:25:14Z")

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I think its your preview command, have you tried the local preview command?  
`fuse preview -t=Local`

I just tested this and it worked, try it and see if you can see anything with either commands.

```auto
<App>

	<Router ux:Name="router" />

	<JavaScript>
		module.exports = {
			gotoFirst: function() { router.goto("firstPage"); },
			gotoSecond: function() { router.goto("secondPage"); }
		};
	</JavaScript>
	
	<ClientPanel>
		<DockPanel>

			<Navigator DefaultPath="firstPage">

				<Page ux:Template="firstPage">
					<Text Alignment="Center">This is the first page.</Text>
				</Page>
				<Page ux:Template="secondPage">
					<Text Alignment="Center">This is the second page.</Text>
				</Page>
			</Navigator>
		
			<Grid Dock="Bottom" Columns="1*,1*">
				<Button Text="First page" Padding="20" Clicked="{gotoFirst}" />
				<Button Text="Second page" Padding="20" Clicked="{gotoSecond}" />
			</Grid>

		</DockPanel>
	</ClientPanel>

</App>

```

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<div class="post-metadata">

**Author:** ![Caleb\_Strong](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/caleb_strong/32/515_2.png) [@Caleb\_Strong](https://forums.fusetools.com/u/Caleb_Strong)\
**Post date:** [November 5, 2018, 9:40pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/5 "2018-11-05T21:40:23Z")

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Just ran that command, and still got this. ![ScrnShot](https://cdck-file-uploads-canada1.s3.dualstack.ca-central-1.amazonaws.com/flex035/uploads/fusetools1/original/1X/aa53da1da75c7e414f9e0a19694bade9ef3b9414.png)

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<div class="post-metadata">

**Author:** ![aeq](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/aeq/32/129_2.png) [@aeq](https://forums.fusetools.com/u/aeq)\
**Post date:** [November 6, 2018, 7:06am UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/6 "2018-11-06T07:06:21Z")

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Hmm, seems to be a Windows 10 [issue](https://answers.microsoft.com/en-us/windows/forum/windows_10-update/opengl-problem-in-windows-10/aff41ab9-0b6f-4317-8dcb-67ba861584c5).

Here’s some things you could try: [https://windowsreport.com/opengl-problems-windows-10](https://windowsreport.com/opengl-problems-windows-10)

Perhaps copying the OpenGL file to the fuse installation directory will work: [https://www.youtube.com/watch?v=1JQoEZjSA40](https://www.youtube.com/watch?v=1JQoEZjSA40)

I see you have OpenGL 4.6 from Nvidia, maybe its too advanced lol

If all else fails, you could still:

- build a preview for your device: `fuse preview -t=Android` or `fuse preview -t=iOS`
- download fuses preview app (You can use the preview app as long as your project only contains UX markup, JavaScript and the standard Fuse packages, but excluding `Fuse.PushNotifications`): [Android](https://play.google.com/store/apps/details?id=com.fusetools.fusepreview) or [iOS](https://itunes.apple.com/no/app/fuse-preview/id1296280076?mt=8)

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<div class="post-metadata">

**Author:** ![Caleb\_Strong](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/caleb_strong/32/515_2.png) [@Caleb\_Strong](https://forums.fusetools.com/u/Caleb_Strong)\
**Post date:** [November 7, 2018, 7:47pm UTC](https://forums.fusetools.com/t/when-app-builds-in-fusetools-it-just-shows-whitescreen-instead-of-the-app/7501/7 "2018-11-07T19:47:12Z")

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Hmm, yeah those didnt work. So I guess my new computer is just a bit too advanced. Hopefully as Fusetools updates it’ll work again.