At http://pauluskamp.nl/zenphoto/recent-werk/ I have a Zen gallery installed that worked fine untill June this year, I wanted to update and the images just don't show?
*see album grootstedelijk perspectief)
I tried all options of uploading, also FTP, the files are there on the server after FTP, but all other uploads failed. In the sourcecode:

<img src="/zenphoto/zp-core/i.php?a=recent-werk/grootstedelijk-perspectief&i=1.jpg&s=85&c=1&cw=85&ch=85&q=120&t=1&wmk=!" width="85" height="85" alt="1" />

what's wrong?

Might be a permissions issue on your server or something else is wrong. So please review your server error logs. My browser reports also the following:
[Error] Failed to load resource: the server responded with a status of 500 (Internal Server Error) (i.php, line 0)
[Error] Failed to load resource: the server responded with a status of 404 (Not Found) (bg.gif, line 0)

The url you posted is the protected url to full image display actually.

What exactly did you want to update?
I ask because I see you are using version 1.4.1.6 and the latest version is 1.4.6.
Also what "other uploads" failed ?

I tried the flash upload and FTP (Dreamweaver) also, maybe it's an update issue.
I will try tomorrow to update, and let you know.
thanks for the response

I made a fresh install,
I think it's ok now