This is a bug for QuickTime from the version 7.6, which can be found in the official web of quicktime at http://lists.apple.com/archives/quicktime-api/2009/Sep/msg00077.html , in the version 7.6of Quicktime upgrade, qtmldll is missed, but which will not affect to view the published QTVR from Panoweaver 6.00. Now the only problem is Panoweaver 6.00 users cant publish into QTVR with Quicktime 7.6upgrade installed, so we recommend you to find a previous version of Quicktime, and then you can use Panoweaver 6.00 to publish QTVR virtual tours.
I think QuickTime will fix this small bug in the close future, hope you can understand.
I found and downloaded Quicktime 7.4.1 for mac and tried to install it but got an error message that this version of Quicktime will not work with my current operating system (10.5.8) Basically I would need to go to a less recent OS which is not practical nor reasonable.
Are there any other solutions? Any progress of an update or fixing the bug?