Hi to all,
today I've updated the version of K2 to the version 2.7.0.
Now when I try to edit the item, change the image (in the image tab) and then press save, I obtain the image in the link:
imgur.com/EnvyYAs
and nothing more
And now I'm completely blocked......any suggestions?
Thank you very much

Clear your browser's cache and also Joomla!'s cache.
Are you using any 3rd party K2 extensions?

I don't know because it's the first time I use K2.
I found it in a professional template but I can't even downgrade the version : (
There is a problem with a table's column when I try to downgrade to the 2.6.0
Is there a log of K2 that I can view?

2.6.9 is the version before 2.7, 2.6.0 is really really old (I do believe it was a typo though).

Are you using any 3rd party extensions? Have you asked the template's developer about any plugins that might intervene with K2?

Also the detailed announcement about K2 is located here: getk2.org/blog/2549-k2-v270-released

I fixed all downgrade the version to the 2.6.9 but I don't know why....

Some templates use plugins or frameworks. It is possible that either a 3d party extension or some of the framework's content is not yet compatible with K2 2.7