Download not possible though no download is running

Hi, I'm a regular user and I'm aware that I cannot do multiple downloads. However I got a message of "Download error, please wait until your download is finished" even though I'm currently NOT downloading anything! Can anyone help me?

Post your problem here : http://forum.romulation.net/index.php?topic=62167.0.Then admin will clear your cache once they see your post.

Thank you!

@ Reku80 are you the same person as Arekin?