# Unhandled exception in Fuse.controls

**URL:** <https://forums.fusetools.com/t/unhandled-exception-in-fuse-controls/3841>\
**Category:** General\
**Created:** [April 15, 2016, 4:39pm UTC](https://forums.fusetools.com/t/unhandled-exception-in-fuse-controls/3841 "2016-04-15T16:39:08Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![kcsekhar13](https://avatars.discourse-cdn.com/v4/letter/k/a8b319/32.png) [@kcsekhar13](https://forums.fusetools.com/u/kcsekhar13)\
**Post date:** [April 15, 2016, 4:39pm UTC](https://forums.fusetools.com/t/unhandled-exception-in-fuse-controls/3841/1 "2016-04-15T16:39:08Z")

</div>

i get below exception when i try to set fill color to a circle.

below is the link for the project. [https://www.dropbox.com/s/plynkp3osqc5eik/KOOLO\_Fuse.zip?dl=0](https://www.dropbox.com/s/plynkp3osqc5eik/KOOLO_Fuse.zip?dl=0)

Fome Home screen, swipe left to navigate to Calender screena, on selecting a particular date we update the circle color. first time it works good, on selecting another date the app crashes with below error.

Preview detected an unhandled exception: System.NullReferenceException: Object reference not set to an instance of an object. at Fuse.Controls.Shape.PrepareDraw(DrawContext dc, Float2 canvasSize) in C:\ProgramData\Uno\Packages\Fuse.Controls\0.26.10\$.uno#45:line 4801 at Fuse.Controls.Shape.DrawVisual(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Controls\0.26.10\$.uno#46:line 4854 at Fuse.Controls.Control.OnDraw(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Controls\0.26.10\$.uno#6:line 534 at Fuse.Elements.Element.LocalDraw(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\$.uno#4:line 738 at Fuse.Elements.Element.CompositEffects(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\$.uno#5:line 925 at Fuse.Elements.ElementAtlas.FillFramebuffer(DrawContext dc, Boolean drawAll, Rect scissorRectInClipSpace) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\Caching\$.uno#3:line 820 at Fuse.Elements.ElementAtlas.PinAndValidateFramebuffer(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\Caching\$.uno#3:line 780 at Fuse.Elements.ElementBatch.Draw(DrawContext dc, Float4x4 localToClipTransform, Rect scissorRectInClipSpace) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\Caching\$.uno#5:line 1378 at Fuse.Elements.ElementBatcher.Draw(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\Caching\$.uno#4:line 1154 at Fuse.Controls.ParentControl.OnDrawControl(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Controls\0.26.10\$.uno#26:line 2624 at Fuse.Controls.Control.OnDraw(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Controls\0.26.10\$.uno#6:line 535 at Fuse.Elements.Element.LocalDraw(DrawContext dc) in C:\ProgramData\Uno\Packages\Fuse.Elements\0.26.10\$.uno#4:line 738 at Fuse.Elements.Element.CompositEffects(DrawContext dc) in C:\ProgramData\Uno\Packages\

---

<div class="post-metadata">

**Author:** ![Anders\_Lassen](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/anders_lassen/32/522_2.png) [@Anders\_Lassen](https://forums.fusetools.com/u/Anders_Lassen)\
**Post date:** [April 17, 2016, 10:33am UTC](https://forums.fusetools.com/t/unhandled-exception-in-fuse-controls/3841/2 "2016-04-17T10:33:08Z")

</div>

Thanks for the test case!