I have an official SCORM-course from Microsoft. Judging by the Microsoft readme it's SCORM 1.2 and can be validated „Advance Distributed Learning (ADL) Conformance Test Suite, Version 1.2.7".

When I upload this course to moodle I can use it with Firefox, but not with the Internet Explorer or Opera or Chrome.
The course doesn't load. To confirm, that it is a general moodle issue, I've tried two things:
1.) I've used the moodle-sandbox (demo.moodle.net) -> same behavior as on my local system
2.) I've tried the Demo-System of the LMS ILIAS -> here it works with all browsers.

The SCORM Debugging shows the following:
Internet Explorer:
Thu, 20 Feb 2014 09:55:01 UTC: Moodle SCORM 1.2 API Loaded, Activity: 10697, SCO: I_SCOO
Thu, 20 Feb 2014 09:55:06 UTC: LMSInitialize("", "") => 0
Thu, 20 Feb 2014 09:55:06 UTC: LMSGetValue("cmi.core.entry") - => 0
Thu, 20 Feb 2014 09:55:06 UTC: LMSGetValue("cmi.suspend_data") - 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 => 0

Firefox:
Thu, 20 Feb 2014 09:52:09 GMT: Moodle SCORM 1.2 API Loaded, Activity: 10697, SCO: I_SCOO
Thu, 20 Feb 2014 09:52:10 GMT: LMSInitialize("", "") => 0
Thu, 20 Feb 2014 09:52:10 GMT: LMSGetValue("cmi.core.entry") - => 0
Thu, 20 Feb 2014 09:52:10 GMT: LMSGetValue("cmi.suspend_data") - 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 => 0
Thu, 20 Feb 2014 09:52:10 GMT: LMSGetValue("cmi.core.lesson_location") - 0 => 0
Thu, 20 Feb 2014 09:52:10 GMT: LMSSetValue("cmi.core.lesson_location", "0") => 0
Thu, 20 Feb 2014 09:52:10 GMT: LMSGetValue("cmi.comments") - => 0

For more details you can also check my forum entry:
https://moodle.org/mod/forum/discuss.php?d=254966