Error importing Excel into SharePoint List

[Clives-online]

Greetings,

I am trying to create a List on SharePoint by importing an Excel file.

I am getting the following error??

I didn't get this problem yesterday?? I would appreciate any pointers.

Regards,

Clive

[#2]

I find SharePoint to be really flaky. I cannot get the Create List using Excel is not displayed now, when I click on the link??