Save map error ArcGIS Online

[cathycoldrey1]

Hello,
I'm receiving an error when trying to save a map for the first time.

I have imported a shapefile that is a site boundary. The file size is 10kb. When I try to save the map it just 'hangs' and does nothing. In the bottom left hand corner of the Internet explorer 8 window the error says:

"Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C)
Timestamp: Wed, 24 Jul 2013 11:00:33 UTC


Message: Script error
Line: 0
Char: 0
Code: 0
URI: http://d3w50ib5d2uy0g.cloudfront.net...rcgisonline.js


Message: Script error
Line: 0
Char: 0
Code: 0
URI: http://d3w50ib5d2uy0g.cloudfront.net/cdn/2859/js/esri/arcgisonline.js"

now the error says it's a mozilla firefox error, however I am using Internet Explorer 8. Very confusing.

This seems to be a new error this week.

Any help would be greatly appreciated!
Thanks,
Cathy