Cant upload with MegaUpload

I am trying to use MegaManager to upload to MegaUpload, but after the upload is done, i double click it to get the download URL and it has none, it only has “Download URL: (when uploaded). Why is this happening? Please help.
Answer #1
Any screens of what MU says? Never happened. Try reinstalling MU manager
Answer #2
What OS are you using ???
Answer #3
Try reinstalling the program.
Answer #4
I’m using Windows Vista, but the error was fixed reinstalling the program. Thank you!