So, here's the log file. Oh, and this site does have the "plus" version installed, so if it's a matter of needing to exclude those JPGs, I think the "plus" version provides for exclusions? Haven't really fiddled with a lot of the enhancements in the plus version, since the basic stuff in the "core" version had been working pretty well for me, even with having to have multiple back-up files (a bunch of those 1mb files) -- this particular site generated 49 of those before succumbing to the error 500 -- and yeah, the files are present when I view the dir in FTP, but the interface just says "failed", so I don't know how reliable the 49 files really are. But at 49+ mb, you can see it's a fairly big site, so maybe it's failing for the same reason the 25 mb site did, on the less robust host. I dunno, all this server-tech is kinda greek to me -- definitely not a programmer here! :D
Hope you can help me figure out why this keeps going bust, and how I can run it successfully (even if I have to make exclusions of the JPGs).