When dealing with the import of larger files on SCORM Cloud, you will sometimes run into timeout errors when importing. Instead of using the normal import control on the SCORM Cloud main page, you can upload the file to the 'default' folder that resides in your 'uploads' folder on the Cloud FTP. Or you can choose the Realm and AppID you'd like the course to reside in and drag/drop the course in there. You should be able to use your normal FTP client to get the file up there (FTP examples are FileZilla and Cyber Duck)
UserName: Your SCORM Cloud UserName
Password: Your SCORM Cloud Password
Once you have the file up there, log in to your Cloud console...then in the top right hand portion of the screen, you should see a link when you click the `Add Content` button that reads 'Import from your FTP Space'. Click on that, it will give you a list of all of the files you uploaded.
Find the zip file you placed on the FTP, then click the 'import' link that should be to the right. You can also specify a courseID for import by clicking the associated button on that screen.
Let me know if you have any questions.