My company develops SCORM packages for corporate clients. For one particular client we have used the "prerequisites" functionality of SCORM. The SCORM file consists of a couple of lessons and each lesson has the previous lesson as a prerequisite.
In Moodle 1.6.x this worked perfectly. In the navigation menu only available lessons would be clickable (see attachment). In the current version of Moodle this does not work anymore: all lessons are always clickable. I think that this is not the expected behaviour...
Please email me privately if you need an example SCORM package for testing. I cannot post it in a public forum (the clients owns it...)
I really hope this can be resolved as soon as possible!
Hans de Zwart