# After upgrade can't preview local

**URL:** <https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791>\
**Category:** Bug Reports\
**Created:** [September 14, 2016, 5:12pm UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791 "2016-09-14T17:12:54Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Jose\_Martinez](https://avatars.discourse-cdn.com/v4/letter/j/f17d59/32.png) [@Jose\_Martinez](https://forums.fusetools.com/u/Jose_Martinez)\
**Post date:** [September 14, 2016, 5:12pm UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791/1 "2016-09-14T17:12:54Z")

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Hi, i installed the last update 0.25.4  
When i tried to preview show the next errors

C:\ProgramData\Uno\Packages\Fuse.Scripting.V8\0.35.12$.uxl(7.34): E0000: Failed to load assembly C:\ProgramData\Uno\Packages\Fuse.Scripting.V8\0.35.12\lib\DotNet\V8Simple.net.dll: The system cannot find the file specified. (Exception from HRESULT: 0x80070002)

i unistalled and reinstalled a couple of times, i renamed the “uno” folder to installation make it again.  
but the path 0.35.12\lib\DotNet\ not exist.

the file $.uxl is there on the path.

i’m testing with a simple

Thank you.

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**Author:** ![Anders\_Schau\_Knatten](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/anders_schau_knatten/32/41_2.png) [@Anders\_Schau\_Knatten](https://forums.fusetools.com/u/Anders_Schau_Knatten)\
**Post date:** [September 15, 2016, 7:30am UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791/2 "2016-09-15T07:30:47Z")

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Hi, which version of Fuse were you on before 0.25.4?

What’s the output of `dir c:\ProgramData\Uno\Packages\Fuse.Scripting.V8\0.35.12\lib\DotNet\V8Simple.net.dll`?

Can you try to delete `C:\ProgramData\Uno\Packages\Fuse.Scripting.V8\0.35.12\lib\.stuff` and `C:\ProgramData\Uno\Packages\Fuse.Scripting.V8\0.35.12\lib\DotNet`, and then run `fuse preview` again?

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<div class="post-metadata">

**Author:** ![Jose\_Martinez](https://avatars.discourse-cdn.com/v4/letter/j/f17d59/32.png) [@Jose\_Martinez](https://forums.fusetools.com/u/Jose_Martinez)\
**Post date:** [September 17, 2016, 10:34pm UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791/3 "2016-09-17T22:34:39Z")

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Thanks, well i don´t know what the problem was, i unistall and reinstall erlier versions until the last version, and it compile again.

And i have a doubt, in what library the pagecontrol is?  
i compile my app from a months a go and i have received E8001: Data type not found: PageControl  
Error E8001: Data type not found: PageControl

thanks again.

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<div class="post-metadata">

**Author:** ![Anders\_Schau\_Knatten](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/anders_schau_knatten/32/41_2.png) [@Anders\_Schau\_Knatten](https://forums.fusetools.com/u/Anders_Schau_Knatten)\
**Post date:** [September 19, 2016, 6:05am UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791/4 "2016-09-19T06:05:10Z")

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Good to hear that you got the dll working.

You shouldn’t have to include any special libraries to use `PageControl`. Can you please post a minimal example of it not being available? Maybe it also helps to have a look at [this example](https://www.fusetools.com/examples/page-control) that uses it.

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<div class="post-metadata">

**Author:** ![Jose\_Martinez](https://avatars.discourse-cdn.com/v4/letter/j/f17d59/32.png) [@Jose\_Martinez](https://forums.fusetools.com/u/Jose_Martinez)\
**Post date:** [September 19, 2016, 1:21pm UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791/5 "2016-09-19T13:21:56Z")

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I replace the .unoproj packages.  
i did create a simple new project then i copied the

{  
“RootNamespace”:"",  
“Packages”: [  
“Fuse”,  
“FuseJS”  
],  
“Includes”: [  
“\*”  
]  
}

to my “old version” project and this it, run again.  
next is the list of packages name in my project before replace :

```
   "Fuse.Animations",
    "Fuse.BasicTheme",
    "Fuse.Controls",
    "Fuse.Designer",
    "Fuse.Drawing",
    "Fuse.Drawing.Primitives",
    "Fuse.Effects",
    "Fuse.Elements",
    "Fuse.Entities",
    "Fuse.Gestures",
    "Fuse.Navigation",
    "Fuse.Triggers",
    "Fuse.Reactive",
    "Fuse.Android",
    "Fuse.Desktop",
    "Fuse.iOS",
    "Fuse.UserEvents",
    "FuseCore",
    "Uno.Collections",
    "Uno.Geometry"

```

thank you.

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<div class="post-metadata">

**Author:** ![Anders\_Schau\_Knatten](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/anders_schau_knatten/32/41_2.png) [@Anders\_Schau\_Knatten](https://forums.fusetools.com/u/Anders_Schau_Knatten)\
**Post date:** [September 20, 2016, 11:39am UTC](https://forums.fusetools.com/t/after-upgrade-cant-preview-local/791/6 "2016-09-20T11:39:52Z")

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The new `.unoproj` should work. Can you try to create a small reproduction of this issue? Then maybe I can see what exactly is wrong.