# Rendering crash **URL:** \ **Category:** CesiumJS\ **Created:** [May 30, 2017, 3:56pm UTC](https://community.cesium.com/t/rendering-crash/5572 "2017-05-30T15:56:56Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Scott\_Haynes](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_haynes/32/2063_2.png) [@Scott\_Haynes](https://community.cesium.com/u/Scott_Haynes)\ **Post date:** [May 30, 2017, 3:56pm UTC](https://community.cesium.com/t/rendering-crash/5572/1 "2017-05-30T15:56:56Z")
We’re getting the following when loading some imagery after cesium is intialized. We have a couple of different sets of imagery, so we load the imagery once the user selects which map to view. If you zoom in and out just after loading the map then the following will occur on occasion. We’re also getting alot of the following errors, but we’ve been getting these for the length of the project. GET http://:8081/default/smerc/2/2/3.jop 404 (Not Found) Cesium.js:428 An error occurred in “\_”: Failed to obtain image tile X: 3 Y: 2 Level: 2. Cesium.js:477 An error occurred while rendering. Rendering has stopped. undefined TypeError: Cannot read property ‘\_target’ of undefined TypeError: Cannot read property ‘\_target’ of undefined at f.set ([http://localhost:8080/dbst/js/cesium/Cesium.js:439:17853](http://localhost:8080/dbst/js/cesium/Cesium.js:439:17853) ) at c.\_setUniforms ([http://localhost:8080/dbst/js/cesium/Cesium.js:439:25512](http://localhost:8080/dbst/js/cesium/Cesium.js:439:25512) ) at k ([http://localhost:8080/dbst/js/cesium/Cesium.js:460:25142](http://localhost:8080/dbst/js/cesium/Cesium.js:460:25142) ) at L.draw ([http://localhost:8080/dbst/js/cesium/Cesium.js:460:28452](http://localhost:8080/dbst/js/cesium/Cesium.js:460:28452) ) at n.execute ([http://localhost:8080/dbst/js/cesium/Cesium.js:438:27270](http://localhost:8080/dbst/js/cesium/Cesium.js:438:27270) ) at xe ([http://localhost:8080/dbst/js/cesium/Cesium.js:471:27129](http://localhost:8080/dbst/js/cesium/Cesium.js:471:27129) ) at Ie ([http://localhost:8080/dbst/js/cesium/Cesium.js:471:30195](http://localhost:8080/dbst/js/cesium/Cesium.js:471:30195) ) at Ve ([http://localhost:8080/dbst/js/cesium/Cesium.js:472:3011](http://localhost:8080/dbst/js/cesium/Cesium.js:472:3011) ) at Be ([http://localhost:8080/dbst/js/cesium/Cesium.js:472:930](http://localhost:8080/dbst/js/cesium/Cesium.js:472:930) ) at qe ([http://localhost:8080/dbst/js/cesium/Cesium.js:472:7008](http://localhost:8080/dbst/js/cesium/Cesium.js:472:7008)) Is there place to debug to see why this is occurring? Scott ---
**Author:** ![Scott\_Haynes](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_haynes/32/2063_2.png) [@Scott\_Haynes](https://community.cesium.com/u/Scott_Haynes)\ **Post date:** [June 1, 2017, 1:10am UTC](https://community.cesium.com/t/rendering-crash/5572/2 "2017-06-01T01:10:16Z")
First of all, this issue is a real show stopper. I don’t think we’re doing anything outside of the norm, and it’s pretty easy to get Cesium to stop rendering. Unfortunately, I can’t really share our imagery, but I’m trying to find a way to build a sandcastle app to show the problem. Cesium v28 on windows with multiple configurations. Here is what I have done so far: I changed: UniformSampler.prototype.set = function() { var v = this.value; if ( v !== undefined ) { var gl = this.\_gl; gl.activeTexture(gl.TEXTURE0 + this.textureUnitIndex); gl.bindTexture(v.\_target, v.\_texture); } else { console.info( “ERROR: UniformSampler value is undefined” ) } }; And I got this(so I’m thinking that I’m on to something): Cesium.js:176314 An error occurred while rendering. Rendering has stopped. undefined DeveloperError: readyImagery is not actually ready! Error at new DeveloperError ([http://localhost:8080/dbst/js/cesium/Cesium.js:1327:19](http://localhost:8080/dbst/js/cesium/Cesium.js:1327:19) ) at addDrawCommandsForTile ([http://localhost:8080/dbst/js/cesium/Cesium.js:152610:27](http://localhost:8080/dbst/js/cesium/Cesium.js:152610:27) ) at GlobeSurfaceTileProvider.endUpdate ([http://localhost:8080/dbst/js/cesium/Cesium.js:151910:17](http://localhost:8080/dbst/js/cesium/Cesium.js:151910:17) ) at QuadtreePrimitive.update ([http://localhost:8080/dbst/js/cesium/Cesium.js:154180:32](http://localhost:8080/dbst/js/cesium/Cesium.js:154180:32) ) at Globe.update ([http://localhost:8080/dbst/js/cesium/Cesium.js:155229:21](http://localhost:8080/dbst/js/cesium/Cesium.js:155229:21) ) at updatePrimitives ([http://localhost:8080/dbst/js/cesium/Cesium.js:167300:26](http://localhost:8080/dbst/js/cesium/Cesium.js:167300:26) ) at executeCommandsInViewport ([http://localhost:8080/dbst/js/cesium/Cesium.js:167205:9](http://localhost:8080/dbst/js/cesium/Cesium.js:167205:9) ) at updateAndExecuteCommands ([http://localhost:8080/dbst/js/cesium/Cesium.js:167073:17](http://localhost:8080/dbst/js/cesium/Cesium.js:167073:17) ) at render ([http://localhost:8080/dbst/js/cesium/Cesium.js:167503:9](http://localhost:8080/dbst/js/cesium/Cesium.js:167503:9) ) at Scene.render ([http://localhost:8080/dbst/js/cesium/Cesium.js:167541:13](http://localhost:8080/dbst/js/cesium/Cesium.js:167541:13)) Any help would be greatly appreciated. Thanks, Scott ---
**Author:** ![Scott\_Haynes](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_haynes/32/2063_2.png) [@Scott\_Haynes](https://community.cesium.com/u/Scott_Haynes)\ **Post date:** [June 1, 2017, 1:43am UTC](https://community.cesium.com/t/rendering-crash/5572/3 "2017-06-01T01:43:48Z")
Another edit: UniformSampler.prototype.set = function() { var gl = this.\_gl; gl.activeTexture(gl.TEXTURE0 + this.textureUnitIndex); var v = this.value; v && gl.bindTexture(v.\_target, v.\_texture); }; Results: Cesium.js:25661 Uncaught DeveloperError {name: “DeveloperError”, message: “This object was destroyed, i.e., destroy() was called.”, stack: “Error↵ at new DeveloperError ([http://localhost](http://localhost):…localhost:8080/dbst/js/cesium/Cesium.js:167680:9)”} throwOnDestroyed @ Cesium.js:25661 continueDraw @ Cesium.js:135862 Context.draw @ Cesium.js:135899 DrawCommand.execute @ Cesium.js:70463 executeCommand @ Cesium.js:166601 executeCommands @ Cesium.js:166842 executeCommandsInViewport @ Cesium.js:167210 updateAndExecuteCommands @ Cesium.js:167069 Scene.pick @ Cesium.js:167680 Scene.drillPick @ Cesium.js:167793 pick @ cesiumearth.js:4565 (anonymous) @ cesiumearth.js:4915 handleMouseMove @ Cesium.js:59017 handlePointerMove @ Cesium.js:59413 listener @ Cesium.js:58832 Cesium.js:25661 Uncaught DeveloperError {name: “DeveloperError”, message: “This object was destroyed, i.e., destroy() was called.”, stack: “Error↵ at new DeveloperError ([http://localhost](http://localhost):…localhost:8080/dbst/js/cesium/Cesium.js:167680:9)”} throwOnDestroyed @ Cesium.js:25661 continueDraw @ Cesium.js:135862 Context.draw @ Cesium.js:135899 DrawCommand.execute @ Cesium.js:70463 executeCommand @ Cesium.js:166601 executeCommands @ Cesium.js:166842 executeCommandsInViewport @ Cesium.js:167210 updateAndExecuteCommands @ Cesium.js:167069 Scene.pick @ Cesium.js:167680 Scene.drillPick @ Cesium.js:167793 pick @ cesiumearth.js:4565 (anonymous) @ cesiumearth.js:4915 handleMouseMove @ Cesium.js:59017 handlePointerMove @ Cesium.js:59413 listener @ Cesium.js:58832 Cesium.js:25661 Uncaught DeveloperError {name: “DeveloperError”, message: “This object was destroyed, i.e., destroy() was called.”, stack: “Error↵ at new DeveloperError ([http://localhost](http://localhost):…localhost:8080/dbst/js/cesium/Cesium.js:167680:9)”} throwOnDestroyed @ Cesium.js:25661 continueDraw @ Cesium.js:135862 Context.draw @ Cesium.js:135899 DrawCommand.execute @ Cesium.js:70463 executeCommand @ Cesium.js:166601 executeCommands @ Cesium.js:166842 executeCommandsInViewport @ Cesium.js:167210 updateAndExecuteCommands @ Cesium.js:167069 Scene.pick @ Cesium.js:167680 Scene.drillPick @ Cesium.js:167793 pick @ cesiumearth.js:4565 (anonymous) @ cesiumearth.js:4915 handleMouseMove @ Cesium.js:59017 handlePointerMove @ Cesium.js:59413 listener @ Cesium.js:58832 Cesium.js:25661 Uncaught DeveloperError {name: “DeveloperError”, message: “This object was destroyed, i.e., destroy() was called.”, stack: “Error↵ at new DeveloperError ([http://localhost](http://localhost):…localhost:8080/dbst/js/cesium/Cesium.js:167680:9)”} ---
**Author:** ![Scott\_Haynes](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_haynes/32/2063_2.png) [@Scott\_Haynes](https://community.cesium.com/u/Scott_Haynes)\ **Post date:** [June 1, 2017, 1:49am UTC](https://community.cesium.com/t/rendering-crash/5572/4 "2017-06-01T01:49:32Z")
> Another edit: > UniformSampler.prototype.set = function() { > var gl = this.\_gl; > gl.activeTexture(gl.TEXTURE0 + this.textureUnitIndex); > > var v = this.value; > v && gl.bindTexture(v.\_target, v.\_texture); > }; > Opps! Left out this part, same error as above though. Cesium.js:176310 An error occurred while rendering. Rendering has stopped. undefined DeveloperError: readyImagery is not actually ready! Error at new DeveloperError ([http://localhost:8080/dbst/js/cesium/Cesium.js:1327:19](http://localhost:8080/dbst/js/cesium/Cesium.js:1327:19) ) at addDrawCommandsForTile ([http://localhost:8080/dbst/js/cesium/Cesium.js:152606:27](http://localhost:8080/dbst/js/cesium/Cesium.js:152606:27) ) at GlobeSurfaceTileProvider.endUpdate ([http://localhost:8080/dbst/js/cesium/Cesium.js:151906:17](http://localhost:8080/dbst/js/cesium/Cesium.js:151906:17) ) at QuadtreePrimitive.update ([http://localhost:8080/dbst/js/cesium/Cesium.js:154176:32](http://localhost:8080/dbst/js/cesium/Cesium.js:154176:32) ) at Globe.update ([http://localhost:8080/dbst/js/cesium/Cesium.js:155225:21](http://localhost:8080/dbst/js/cesium/Cesium.js:155225:21) ) at updatePrimitives ([http://localhost:8080/dbst/js/cesium/Cesium.js:167296:26](http://localhost:8080/dbst/js/cesium/Cesium.js:167296:26) ) at executeCommandsInViewport ([http://localhost:8080/dbst/js/cesium/Cesium.js:167201:9](http://localhost:8080/dbst/js/cesium/Cesium.js:167201:9) ) at updateAndExecuteCommands ([http://localhost:8080/dbst/js/cesium/Cesium.js:167069:17](http://localhost:8080/dbst/js/cesium/Cesium.js:167069:17) ) at render ([http://localhost:8080/dbst/js/cesium/Cesium.js:167499:9](http://localhost:8080/dbst/js/cesium/Cesium.js:167499:9) ) at Scene.render ([http://localhost:8080/dbst/js/cesium/Cesium.js:167537:13](http://localhost:8080/dbst/js/cesium/Cesium.js:167537:13)) ---
**Author:** ![Scott\_Haynes](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_haynes/32/2063_2.png) [@Scott\_Haynes](https://community.cesium.com/u/Scott_Haynes)\ **Post date:** [June 1, 2017, 6:21pm UTC](https://community.cesium.com/t/rendering-crash/5572/5 "2017-06-01T18:21:10Z")
[![](https://lh3.googleusercontent.com/-R4pRgfLlqms/WTBbARR32GI/AAAAAAAABEQ/puZ__B72rD4td_7sajweqNfdLbeec_V_wCLcB/s1600/targetRendering.png)](https://lh3.googleusercontent.com/-R4pRgfLlqms/WTBbARR32GI/AAAAAAAABEQ/puZ__B72rD4td_7sajweqNfdLbeec_V_wCLcB/s1600/targetRendering.png) ---
**Author:** ![Matt\_Amato](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/matt_amato/32/1993_2.png) [@Matt\_Amato](https://community.cesium.com/u/Matt_Amato)\ **Post date:** [June 1, 2017, 8:24pm UTC](https://community.cesium.com/t/rendering-crash/5572/6 "2017-06-01T20:24:08Z")
By “v28” Do you mean b28 or 1.28.0? (I assume the latter). We fixed an issue that could be the source of this just a couple of months ago: [https://github.com/AnalyticalGraphicsInc/cesium/issues/4777](https://github.com/AnalyticalGraphicsInc/cesium/issues/4777) (and the PR [https://github.com/AnalyticalGraphicsInc/cesium/pull/4811](https://github.com/AnalyticalGraphicsInc/cesium/pull/4811) ) . I would recommend upgrading out 1.34 (which we just released today) to see if the issue still presents itself. Sorry I don’t have a better answer for you, but it’s hard to provide more guidance here without being able to reproduce it on our end. I’m actually kind of optimistic that upgrading Cesium will fix the issue though. ---
**Author:** ![Scott\_Haynes](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/scott_haynes/32/2063_2.png) [@Scott\_Haynes](https://community.cesium.com/u/Scott_Haynes)\ **Post date:** [June 1, 2017, 10:19pm UTC](https://community.cesium.com/t/rendering-crash/5572/7 "2017-06-01T22:19:09Z")
1.34 does in fact appear to fix the problem! Thanks, Scott