After I added a sprite, my preview screen turned black and stayed black until I deleted it. It seemed that the issues began happening when I went into Piskel to rotate the sprite so that it was accurate with the auto rotate in the Top/Down Movement behaviour.
Next time it happens, press ctrl + shift + i, click on console and check for any error messages (in red). They should give you a clue to whats going on.
Aslo, you can open the project manager icon (top left under file) click on game settings > resources. Then right click on the list of resources, and select âremove resources with an invalid pathâ.
The only error I get was the app not being able to find an image I deleted from the project files a few hours before the error happened, and the image isnât even used anywhere in the project. I doubt this error is causing the problem, as scrolling up reveals that the error has been happening long before the black screen problem began happening.
Well, I got rid of the resource, but it didnât help anything. I checked the console in the actual project window, and got this.
Then why mention it in the initial post?
Can you post a snip of your events? It may be youâre referencing something that isnât right (are you using the word âvariablesâ anywhere? Or is there a semicolon that shouldnât be there?
Hereâs the best way to make this easy: I havenât used any events or variables whatsoever, consider it talent 
I also havenât used java yet either.
Oh, the image Iâm talking about is an old texture for a sidewalk, not related to the sprite in any way.
So use that âtalentâ to work it out for yourself then. If you wonât share a screen snip of your events, then donât expect us to be able help you. We would be flying blind. And thatâs of no use to anyone.
1 Like
Just jesting by throwing it back at ya 
Anyway, what are the âinfâ settings for acceleration and deceleration? My understanding is itâs meant to be a number.
I wanted the character to less glide and have more of an instant start/stop, so I just essentially spammed 9, but when I clicked out it just replaced it with âinfâ. And it did indeed work for a bit, but when I went back in to rotate the sprite, thatâs when I got the black screen.
Edit: I also tried setting the numbers to 0 at one point but it just stopped moving, so yeah.
Ah ok, itâs all good! 
Can you give a screen snip of the error messages when you press ctrl + shift + i?
Already posted it here!
Please wait 1-2 seconds when you upload a file like an image, otherwise, the image isnât visible. I fixed it in your previous post.
Did you edit the project file manually?
Did you add a JS event that you wrote?
If you can send us the file game.json, Iâll check if the project is valid because the error isnât common.
1 Like
Lemme answer everything.
First, the image didnât load because I forgot the ! before the image name (I think I deleted it by accident).
For the next two questions, I did neither.
For the last question, Iâll show you, also again, the JS is not modified, it would just be something wrong with the actual app (like a small bug or something)
{
"firstLayout": "",
"gdVersion": {
"build": 99,
"major": 4,
"minor": 0,
"revision": 0
},
"properties": {
"adaptGameResolutionAtRuntime": false,
"folderProject": false,
"orientation": "landscape",
"packageName": "com.example.gamename",
"pixelsRounding": true,
"projectUuid": "9c072d94-e233-4635-a70d-e71eb0166e4d",
"scaleMode": "nearest",
"sizeOnStartupMode": "adaptWidth",
"useExternalSourceFiles": false,
"version": "1.0.0",
"name": "Project",
"author": "",
"windowWidth": 160,
"windowHeight": 90,
"latestCompilationDirectory": "",
"maxFPS": 60,
"minFPS": 20,
"verticalSync": false,
"platformSpecificAssets": {},
"loadingScreen": {
"backgroundColor": 0,
"backgroundFadeInDuration": 0.2,
"backgroundImageResourceName": "",
"gdevelopLogoStyle": "light",
"logoAndProgressFadeInDuration": 0.2,
"logoAndProgressLogoFadeInDelay": 0.2,
"minDuration": 1.5,
"progressBarColor": 16777215,
"progressBarHeight": 20,
"progressBarMaxWidth": 200,
"progressBarMinWidth": 40,
"progressBarWidthPercent": 30,
"showGDevelopSplash": true,
"showProgressBar": true
},
"authorIds": [],
"extensionProperties": [
{
"extension": "AdMob",
"property": "AdMobAppIdAndroid",
"value": ""
}
],
"platforms": [
{
"name": "GDevelop JS platform"
}
],
"currentPlatform": "GDevelop JS platform"
},
"resources": {
"resources": [
{
"alwaysLoaded": false,
"file": "road.png",
"kind": "image",
"metadata": "",
"name": "road.png",
"smoothed": false,
"userAdded": false
},
{
"alwaysLoaded": false,
"file": "building.png",
"kind": "image",
"metadata": "",
"name": "building.png",
"smoothed": false,
"userAdded": false
},
{
"alwaysLoaded": false,
"file": "sidewalk.png",
"kind": "image",
"metadata": "",
"name": "sidewalk.png",
"smoothed": false,
"userAdded": false
},
{
"alwaysLoaded": false,
"file": "sidewalk2.png",
"kind": "image",
"metadata": "",
"name": "sidewalk2.png",
"smoothed": false,
"userAdded": false
}
],
"resourceFolders": []
},
"objects": [],
"objectsGroups": [],
"variables": [],
"layouts": [
{
"b": 209,
"disableInputWhenNotFocused": true,
"mangledName": "New_32scene",
"name": "New scene",
"oglFOV": 90,
"oglZFar": 500,
"oglZNear": 1,
"r": 209,
"standardSortMethod": true,
"stopSoundsOnStartup": true,
"title": "",
"v": 209,
"uiSettings": {
"grid": false,
"gridType": "rectangular",
"gridWidth": 32,
"gridHeight": 32,
"gridOffsetX": 0,
"gridOffsetY": 0,
"gridColor": 10401023,
"gridAlpha": 0.8,
"snap": false,
"zoomFactor": 4.419999999999997,
"windowMask": false
},
"objectsGroups": [],
"variables": [],
"instances": [
{
"angle": 0,
"customSize": true,
"height": 90,
"layer": "",
"locked": false,
"name": "NewObject",
"persistentUuid": "75eebd05-6659-4360-adce-ad930c1467cf",
"width": 48,
"x": 56,
"y": 0,
"zOrder": 1,
"numberProperties": [],
"stringProperties": [],
"initialVariables": []
},
{
"angle": 0,
"customSize": true,
"height": 90,
"layer": "",
"locked": false,
"name": "NewObject2",
"persistentUuid": "ae9da2e4-a0f7-49fb-ab77-adb64112990f",
"width": 42,
"x": 118,
"y": 0,
"zOrder": 2,
"numberProperties": [],
"stringProperties": [],
"initialVariables": []
},
{
"angle": 0,
"customSize": true,
"height": 90,
"layer": "",
"locked": false,
"name": "NewObject2",
"persistentUuid": "34b92274-4e8a-4c5d-8178-4975c5439dc7",
"width": 42,
"x": 0,
"y": 0,
"zOrder": 2,
"numberProperties": [],
"stringProperties": [],
"initialVariables": []
}
],
"objects": [
{
"height": 32,
"name": "NewObject",
"tags": "",
"texture": "road.png",
"type": "TiledSpriteObject::TiledSprite",
"width": 32,
"variables": [],
"effects": [],
"behaviors": []
},
{
"height": 32,
"name": "NewObject2",
"tags": "",
"texture": "building.png",
"type": "TiledSpriteObject::TiledSprite",
"width": 32,
"variables": [],
"effects": [],
"behaviors": []
}
],
"events": [],
"layers": [
{
"ambientLightColorB": 0,
"ambientLightColorG": 0,
"ambientLightColorR": -2147483600,
"followBaseLayerCamera": false,
"isLightingLayer": false,
"name": "",
"visibility": true,
"cameras": [
{
"defaultSize": true,
"defaultViewport": true,
"height": 0,
"viewportBottom": 1,
"viewportLeft": 0,
"viewportRight": 1,
"viewportTop": 0,
"width": 0
}
],
"effects": []
}
],
"behaviorsSharedData": []
}
],
"externalEvents": [],
"eventsFunctionsExtensions": [],
"externalLayouts": [],
"externalSourceFiles": []
}
There is nothing wrong with the project you shared, it is correct.
The only way I have found to get the same error is as you said by spamming the 9 to get an inf.
By setting a reasonable number the bug disappears.
I will forward the issue to the developers.