I've looked at this and the problem only appears to be with the manual update, i.e. when you click the 'Check for Updates' button. At this point I have not been able to locate the bug but I will post as soon as I do.
That said, the automatic update works correctly. The automatic update checks for an update every week and prompts you to download if one is available. So if you wait for 7 days then the solution will present itself, alternatively you can speed things along as follows -
1. Close E-Portal.
2. Set the date to be 8 days from the current date.
3. Open E-Portal and then close it again (E-Portal checks for updates on close).
4. Open E-Portal again and a dialogue should ask if you want to update - do so.
5. After the update, set the date back to the correct day.
Apologies for the inconvenience, please let me know if you experience any other problems.
Steve 'Flash' Monks