SCORM player won't load in popup window. This only happens when playing inside a popup window, not if the same player/scorm package is opened in the same window. Also it does not happen every time the player is launched. It usually happens when not cached i.e. the cache is emptied. We found no errors / indicators in http traffic or firebug.

Here's the debug message from the player:

0:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - Trying to create XMLHttpRequest in JavaScript1.5
1:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - Entered browser conditional
2:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - Creating object
3:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - intReCheckLoadedInterval=250
4:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - intReCheckAttemptsBeforeTimeout=240
5:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - IFrameLoaded
6:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - In GetAICCURL
7:Mon Jan 31 2011 09:45:43 GMT+0100 - GetQueryStringValue Element 'AICC_URL' Not Found, Returning: empty string
8:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - Querystring value =
9:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - GetAICCURL returning:
10:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - In DetectPreferredCommMethod, checking XMLHTTP
11:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - Checking IFrame
12:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - blnCanUseXMLHTTP=true
13:Mon Jan 31 2011 09:45:43 GMT+0100 - AICCComm - blnCanUseIFrame=true
14:Mon Jan 31 2011 09:45:43 GMT+0100 - ----------------------------------------
15:Mon Jan 31 2011 09:45:43 GMT+0100 - ----------------------------------------
16:Mon Jan 31 2011 09:45:43 GMT+0100 - In Start - Version: 3.3 Last Modified=01/27/2011 10:08:37
17:Mon Jan 31 2011 09:45:43 GMT+0100 - Browser Info (Netscape 5.0 (Windows; de))
18:Mon Jan 31 2011 09:45:43 GMT+0100 - URL: http://vl89815.usz.ch/pluginfile.php/29/mod_scorm/content/9/index_lms.html
19:Mon Jan 31 2011 09:45:43 GMT+0100 - ----------------------------------------
20:Mon Jan 31 2011 09:45:43 GMT+0100 - ----------------------------------------
21:Mon Jan 31 2011 09:45:43 GMT+0100 - In ClearErrorInfo
22:Mon Jan 31 2011 09:45:43 GMT+0100 - GetQueryStringValue Element 'StandAlone' Not Found, Returning: empty string
23:Mon Jan 31 2011 09:45:43 GMT+0100 - GetQueryStringValue Element 'ShowDebug' Not Found, Returning: empty string
24:Mon Jan 31 2011 09:45:43 GMT+0100 - strStandAlone= strShowInteractiveDebug=
25:Mon Jan 31 2011 09:45:43 GMT+0100 - Standard From Configuration File - SCORM
26:Mon Jan 31 2011 09:45:43 GMT+0100 - Using Standard From Configuration File - SCORM
27:Mon Jan 31 2011 09:45:43 GMT+0100 - In LMSStandardAPI strStandard=SCORM
28:Mon Jan 31 2011 09:45:43 GMT+0100 - Calling Standard Initialize
29:Mon Jan 31 2011 09:45:43 GMT+0100 - In SCORM_Initialize
30:Mon Jan 31 2011 09:45:43 GMT+0100 - In SCORM_ClearErrorInfo
31:Mon Jan 31 2011 09:45:43 GMT+0100 - Grabbing API
32:Mon Jan 31 2011 09:45:43 GMT+0100 - In SCORM_GrabAPI
33:Mon Jan 31 2011 09:45:43 GMT+0100 - Searching with improved ADL algorithm
34:Mon Jan 31 2011 09:45:43 GMT+0100 - In SCORM_GetAPI
35:Mon Jan 31 2011 09:45:43 GMT+0100 - SCORM_GetAPI, searching opener
36:Mon Jan 31 2011 09:45:43 GMT+0100 - In SCORM_ScanParentsForApi, win=http://vl89815.usz.ch/mod/scorm/player.php
37:Mon Jan 31 2011 09:45:43 GMT+0100 - SCORM_GrabAPI, returning
38:Mon Jan 31 2011 09:45:43 GMT+0100 - Unable to acquire SCORM API:
39:Mon Jan 31 2011 09:45:43 GMT+0100 - SCORM_objAPI=undefined
40:Mon Jan 31 2011 09:45:43 GMT+0100 - In InitializeExecuted, blnSuccess=false, strErrorMessage=Error - unable to acquire LMS API, content may not play properly and results may not be recorded. Please contact technical support.
41:Mon Jan 31 2011 09:45:43 GMT+0100 - ERROR - LMS Initialize Failed
42:Mon Jan 31 2011 09:45:43 GMT+0100 - In DisplayError, strMessage=Error - unable to acquire LMS API, content may not play properly and results may not be recorded. Please contact technical support.

The scorm package is here: http://dl.dropbox.com/u/7248261/9856.zip