On the morning of June 15, we experienced a problem with the servers that provide the downloads of the Autodesk Inventor LT Technology Preview. When unforeseen situations like this occur, if you encounter an error, please refrain from attempting to download the software again. There can only be 5 downloads per email address. In this case, the problem occurred after your email address had been logged to send your serial number, using one of your 5 allotments, but before the file download initiated. The web team has since corrected the problem. An update to this blog was posted when the problem was corrected. We apologize for the inconvenience this caused. We appreciate your continued interest in the Autodesk LT Technology Preview.