Having the same problem - would it possible to have a list of what has resolved this issue before, rather than sending a PM with SuperAdmin credentials?

Up to date on SIG-pro, and K2 and Joomla 1.5

Shared hosting environment, server does have GD image installed and verified running correctly by the host.

Thumbnail is blank but you can click and open the gallery and that works as expected.

tinyurl.com/5vvhd38  page link to the affected page.

Thanks in advance for your insight.
Carl

Having the same problem!

SIG-pro 2.0.5 , K2 2.4.1 and Joomla 1.5.22

Server does have GD library installed and verified running correctly by the host.

Thumbnail is blank but you can click and open the gallery and that works as expected.

www.ilsannioquotidiano.com/attualita/item/420-un-secolo-e-mezzo-di-storia-celebrato-a-piazza-castello.html

Thanks.

Solved!

The problem was the name of the file that contains blank spaces.

Thanks

no one seems to be ANSWERING this post. "send credentials" doesn't seem to be helping the community, although I'm willing to do so.

I have latest K2 and just purchased the Image Gallery Pro.

my images were named 1.gif, 2.gif, 3.gif, 4.gif, 5.gif, and then zipped together as 1.zip

I uploaded 1.zip and thumbnails show on backend in admin panel of item.

NO GALLERY shows on front end of item.

here is link

outpost54.com/index.php?option=com_k2&view=item&layout=item&id=36&Itemid=225

what's the deal? i emailed support and they said post in forum, so I assume they want to resolve this for the community.

Thanks
Bill

Thanks for solving, good job  8)

HERE IS HOW I SOLVED THE PROBLEM!
see my previous post, do all of those things then....

here is the important thing..

make sure you DISABLE the free version of simple image gallery plugin.

problem solved.

I had this problem and was getting pretty frustrated as well.  I found a thread on another site that fixed the issue for me.

community.getk2.org/forum/topics/solved-gallery-images-upload

All I did was change the permissions for the root cache folder to 777. I checked the option to delete the previous zip upload. Applied changes. Then reuploaded the zip file and BOOM, I have a gallery.

I don't know what that does for security, but a working gallery is all I care about right now.

I had this problem and was getting pretty frustrated as well.  I found a thread on another site that fixed the issue for me.

community.getk2.org/forum/topics/solved-gallery-images-upload

I see this post, but don't work in my case.

Can someone help me, i upload zip file, but no thumbnails appear in backend and frontend, just h3 tag "Image Gallery".

I use SIG-pro 2.0.5 , K2 2.4.1 and Joomla 1.5.23

any idea?

Pm me access to your super admin please.

Same problem here - no thumbnails - but after click works fine.
I deleted Single Image Gallery free and installed PRO. Didn't help  :(
Can anybody help please