This was observed when using Insight. Browsing in the Solid Edge 'File->Open' dialog, into a folder with Solid Edge content and encountered the following error:
'Script Error' - An error has occurred in the script on this page. Unable to get property 'empty' of undefined or null reference.
Solution This issue may be resolved using the UNC path for the network place instead of http.
Notes and References
Hardware/Software Configuration Platform: INTL64
OS Version: 764