Forum OpenACS Q&A: 5.0.4--> 5.1.1 automatic upgrade only works one package at a time?

Hi all,

I'm using the APM to upgrade from 5.0.4 up to 5.1.1.  I get a list of packages at /acs-admin/install/install, but if I check the checkboxes and click 'Install Checked Applications', nothing happens, I stay on the same page.  (I checked, and the page source looks like it _should_ be sending me on to install-2.)

Problem occurs whether I'm working from the repository or local files.  There's no problem with installing one package at a time (clicking the package name on /acs-admin/install/install), but that's slow and painful.

Suggestions?