Have you followed any suggestions at SMF to get your package manager to work?
Thanks for the suggestion, but the attachment is missing from the initial post, and I'm afraid that after trawling through thirty-five pages of posts I will find the thread contains outdated information, or I'll follow every link and spend the rest of my life going around in futile and evermore exasperating circles until I'm wild with frustration, and thereupon run amok with my pants stretched over my head and pencils shoved up each nostril.
I will try asking my crappy hosts (asmallorange.com) to enable PHP suExec, though, as suggested. Most of the problems I've ever come across with SMF and Tiny Portal, seem to be down to the way my hosts set up their servers.
have you tried opening the package and re-zipping it?
No, but I can't imagine that'll work, because I've also tried expanding the file and uploading the decompressed contents via an ftp prog. Nothing works. Even the ftp drops hundreds of files. That's what makes me wonder if something like mod_security is rejecting the files based on their names, but I'm told by my hosts that's impossible.
You choose the upgrade or update package?
I've tried both. Hell, I've tried allsorts. That's why I eventually came here - I was wondering if perhaps TP was fighting the SMF upgrade, whether there were compatibilty issues, or something.
Thanks for the help, everybody.