Firefox: Script error.

Hi everyone,

our WebGL Build on Kongregate (http://www.kongregate.com/games/till42/volley-brawl) throws an error message popup on startup. I have the feeling that this is only since a few days. Chrome does pop up everything.

This is the complete popup message:
"An error occured running the Unity content on this page. See your browser's JavaScript console for more info. The error was: Script error."

In the web console, I could not find anything more than "Invoking error handler due to Script error." So nothing useful.

It works fine, when I load the index.html directly from my local disk.

Can anyone tell me, if I can do anything to change this? Or is it a Firefox bug? I am on V 45.0b2.

Thanks a lot in advance for looking into this.

 

Hi Marco,

thank you very much for looking into my issue.

I'll see if I can get something out of your log and keep the forum up to date.

Does anyone else have the same issue?

 

Hi alexsuvorov,

I just did like you proposed, removed the lines (as well as my Application.ExternalEval/Application.ExternalCall) calls from Unity to the Kongregate API). You are right. The error must be in the Kongregate API. Strange, that it happens only in Firefox, not in Chrome.

Thank you a lot. I think I shall then turn to Kongregate Support (and hope they are as responsive as Unity is). Or maybe there is an update to their script...

Let me tell by the way you how awesome the WebGL functionality has become! Great job!

 

I think I have made it! My preview at least does not throw the error and still posts stats.

The solution was to use the Kongregate Shell http://developers.kongregate.com/docs/api-overview/client-api
Then I used my own .jslib script as described in the Unity Manual to access the JavaScript API.

I will still check how to get also the user name etc. from the API.

 

I've seen the tostring issue in firefox before.
Is your game running in an iframe? You might have a cross domain issue. I recently ran into the same/similar issue when deploying a game at a client server.

 

Yes, my game is in the Kongregate iFrame. Since today even in two iFrames

So what is your proposal to get rid of the toString Warning?

 

If your game runs fine after the error/warning I would suggest supressing the error altogether by adding this to your html (as early as possible. e.g. just after /head>)

<script type="text/javascript">
// Supresses error(dialogs) but logs them instead. Workaround for some Unity WebGL related issues.
window.onerror = function(message, url, lineNumber) {
console.log("Message: " + message + ". URL: " + url + ". LineNumber: " + lineNumber);
return true;
};
</script>

 

afaik the error is not directly related to the API. It is a security issue (in FF) when you run webgl content in an iframe and then communicate with a third party api. I've seen this tostring error at other clients as well. Alwyas when run in an iframe and when communicating with another JS api.

You can also set document.domain = String(document.domain); // workaround crossdoamin security
but you need to set this in the iframe AND the parent page. Since you probably don't have access to that on Kongregate and the current setup fails another possible solution would then be supressing the error.

I haven't experienced any issues with supressing it since I recall the tostring error is not critical.

 

Thank you PieterAlbers!

I will try to put this into my code for future errors.

@alexsuvorov: You are totally right, I use the general JavaScript API now and do this via my jslib in the plugin folder.