Hi Hanna,

Renderosity is currently undergoing a conversion of the entire site (including some 700,000 uploaded images) to an entirely new system.  Unfortunately, that requires some down time here and there beyond just the original conversion, to fix small problems.    Sorry if that was a problem for you, just try again a bit later. 

This month's Challenge was chosen by last month's Challenge winner, and the theme is 'Waves'  I think that waves other than sea waves would be acceptable.  Maybe next month there will be something that really excites you!

~Viv

Fractals will always amaze me!