I have the same problem. but, upload addition file stopped on 91 % (when I choose a thml 4)

My installatin joomla 3.6.5, joomla 3.7.0, and 8.740 cobalt

Are we talking about gallery fiield or file upload?

This error is defenitely server related. Because when it comes, it does not matter if you change Joomla version or not.

And for some people it eists and for majority not.

SO I think it is something about server.

Like for example after i moved to new server with MintJoomla I can no longe upload files in gallery foeld bigger than 100kb. But I was able to do so on the old server. Although I've changed nothing. I moved my site with Akeeba backup.

The problem is with the file upload field in my case. I haven't tried the gallery field. I'm kinda thinking server as well even though I haven't changed that in a couple years. I have been steadily upgrading Jomla and Cobalt though so maybe something became incompatible along the way. My first suspicion is something to do with the version of PHP I'm using. In the two environments I've tested this in, I'm using PHP 5.5.15 and 5.6.29. My hosting provider supports PHP 7 as well so I'll give that a try on my test server and see what happens.

PHP 7.0.14 (FastCGI) yielded the same results. Any idea on what PHP settings may be related to this problem?

I'm working around the problem for now by setting the chunk size in the MooUploader to be very large. It's not a very good workaround since it defeats the whole purpose of chunking files in the first place but it works for my purposes. I'll keep poking around for a proper solution though.

Could it be related to this: https://www.concrete5.org/community/forums/installation/file-upload-hangsstalls-on-files-100kb ?

I have this problem with gallery field, and I'm not changing my hosting provider for a years...

Luckboy I have this problem with gallery field, and I'm not changing my hosting provider for a years...

Do you agve the same problem with uploads field?

I don't need in this field, but I tested it. And, yes, the same problem with uploads field... May be some folders need some restrictions? I don't know, how works upoads or gallery field. May be someone tell me, what I need to verify in my joomla, cobalt...

Sergey SO I think it is something about server.

Like for example after i moved to new server with MintJoomla I can no longe upload files in gallery foeld bigger than 100kb. But I was able to do so on the old server. Although I've changed nothing. I moved my site with Akeeba backup.

Are you sure? I have three sites on the same server. Two of them have the same issues but one is ok.

Try my solution from this topic:

http://www.mintjoomla.com/support/community-forum/item/6374.html

Overall there is maybe a need to retire the existing Mootools upload field and replace it with a modern Non-Mootools "Upload 2" variation which supports drag and drop as it was planned for Cobalt 9.

I agree. And what about drag and sort support?

Sackgesicht ... retire the existing Mootools upload field and replace it with a modern Non-Mootools "Upload 2" variation which supports drag and drop as it was planned for Cobalt 9.

+1000

Yep. Clean and polish C8! Should have the priority over a "new" C9.

pepperstreet Yep. Clean and polish C8! Should have the priority over a "new" C9.

+10x100

Yes please! But maybe that's what C9 is all about, a clean and polished C8. It is not only about getting rid of Mootools dependencies, but also about simplifying functionality and usability. We sometimes get carried away by demanding new stuff, but we need to improve the User Experience also. Mobile-first design taught us the importance of simplicity, uncluttered screens but also translating real life gestures into actual user interface interaction.

I was drawn to Cobalt because it reminded me of a Swiss army knife: an incredibly versatile instrument with hidden gems. It has a toolset that can be used beyond the scope it was originally designed for.

Let's push this thing to the next level :-)

+10^3

I agree with pepperstreet and Jeff about more polishing of C8 vs efforts on C9. It's the classic problem in software devolpment and marketing... develop fancy new features vs cleaning up existing ones. Another thing I agree with is Cobalt is full of hidden gems and is incredibly versatile. I could say that it is the best Joomla CCK but Cobalt is really in a class of it's own and beats them all hands down when it comes to versatility and capability.

+10 from me also, years passed and from what it seems a C9 version won't come around very soon, Google SEO requirements is already making more and more push over site load speed, so maybe Sergey agree to remove this damn Mootools in Cobalt8 if he can't come with that new version out :(

Rgds

Looks like it works now

http://www.mintjoomla.com/support/community-forum/item/6374.html

The problem is indeed fixed with the suggestions identified in the above post. Thanks for your persistence on this one Sergey to help find a solution. I appreciate your efforts.