We can (and will) fix the upload problem. However, everyone needs to be aware that there are some characters which if in a file name will cause various degrees of difficulty.
Single quote is one. Also percent signs. I imagin that if you had a file with a double quote it would also be a problem, but (fortunately) Windows won't let you create a file with a double quote.
If you FTP files with these characters, you will have problems.
Also, don't put them in zip archives you upload.
I still think this is a server config issue somehow (see the example here, it worked on his server, but not on the two I tested: http://www.zenphoto.org/support/topic.php?id=1763&page=4&replies=93). All the hosts I know simple don't tolerate these characters in filenames, neither directyl nor through zenphoto... but I will be glad to be proofed wrong.
I just finally got around to upgrading my test site before I upgrade my main site. I was extra cautious because of the change from /zen to /zp-core as I knew it would break a lot of my zenphoto plugins.
I too ran into this problem. I didn't notice I had that many folders with ' in them. This is mainly due to the fact that this server is local and not out on the web somewhere, so I name things how I would name them on my local computer. So yeah. it would be great to see this go back to the way it was with folder/file names. I have a lot of zenphoto galleries in a lot of different places which I have setup for others. It would take a long time go rummage through all the databases and relink the albums so the comments stay in tact.
If you suspect it is going to be a while I may just do it anyways. I already have to run through many of them and relink back up for the zenphotopress linking problem with the zen root change.