I am still having troubles with this. Today I downloaded the latest Ubercart Package, started with an empty db and install directory, and selected the Drupal install (not the Ubercart option.) I enabled token and store with no problem. I saw that the other Ubercart core modules required Workflow-ng so I checked the four Workflow-ng modules. After hitting Save Configuration, it comes back with a blank screen and the following error message.

Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /home/buser/public_html/uc/sites/all/modules/workflow_ng/states/states_admin.inc on line 472

I tried hitting the back button and unselecting the workflow-ng, but same error appears. So it seems stuck again.

It is a virtual dedicated server
PHP 4.3.9 now set to 128M max memory.
MySQL 4.1.20

Any ideas are much appreciated. Thank you.