I am fully aware that IE7 is no longer supported by Moodle.

However, simply changing the 3 occurrences, in mod/scorm/module.js, of:

JSON.parse

to:

Y.JSON.parse

Changes the SCORM module from not supporting IE7 at all, to fully working (and continuing to work in all other browsers).

I'll understand if this is rejected, but as I've just been asked to fix this for a client (and it is a very small change), I thought I'd share the patch here as well.