Trouble uploading thumbnails

I have been unable to upload a thumbnail to either of my last two articles.

I have tried Pixabay jpg's, images that I have used on other articles which have worked, and various other options, to no avail.

Is anyone else experiencing this phenomena?

If not can staff suggest what I am doing wrong, please.

I just uploaded a thumbnail with no problems. I haven't tried to publish the wizzle yet. But all seems normal.

Do you get some sort of error? Could you describe more detailed, what happens when you try uploading an image?

Simon, all that happens is what used to happen i.e.

I select an image from wherever, it then says 'loading' and after a few or many seconds the box with 'undefined' appears, but nothing is shown in the image box. No error message (unless you count the 'undefined' as an error message, but then I always got that before).

On the Wizzley front page the article is shown but with a completely white image.

Nothing more, nothing less.

I've not had this one, but I have had problems before with images.

I've found that saving them again, as a jpg, on my hard-drive eradicates a hidden transparency.  Wizzley doesn't like transparencies (whatever they are!).  Then upload them with no hassle.

It might be worth trying.

'undefined' is indeed a JavaScript error, so there has always been some sort of problem ... what browser and system are you on? And where do you see the 'undefined' message? Is it a popup or is that written inside the image placeholder? Sorry for all the questions ...

My best guess is, you've switched to some browser, where an older JavaScript file from Pagewizz is still in the cache. We didn't make any changes in this part of our code in the past days, but maybe two weeks ago ... It really sounds like this.

Simon,

Undefined message is in a popup.

Browser = Chrome (only ever use this for creating Wizzley articles)

System = PC (if that's what you mean by system)

I'll try flushing the cache and let you know if anything changes.

OK cleared Chrome cache and tried to upload a jpg file housed on my own computer as downloaded from clker. Gave 'undefined' in the pop-up and still did not upload the image.

That's weird. I don't have any idea where such a popup may come from. Maybe it's some incompatibility with an add-on or something alike ... I keep on looking. Thanks anyway.

I've always had that pop-up pop up, but previously it has not stopped the picture being added.

Simon, I have resolved my issues with uploading images. Jo had the essence of the resolution.

What I had to do to resolve it was to:

Upload my image into Microsoft Paint. 

Either change the resolution alone or change resolution and cut image size down (to about 5% of actual image size.

Save as a .jpg file.

Then upload to the article.

I still get the 'unresolved' message pop-up, but when I move from edit mode to page view mode the image appears. 

Really strange ...

Hm, maybe you could send me one of those unaltered, problematic images directly... over imgbox.com or something? Then I could try for myself ...