Hi,
<blockquote>I can’t seem to find the tab where I can edit the currencies</blockquote>
Pls to go backend >> Components >> VirtueMart >> Configuration tab >> Currencies.
<blockquote> I also get the error : Attention no standard shopper group set. Anyone knows how to solve this?</blockquote>
Pls try to follow below tips to solve your issue: http://forum.virtuemart.net/index.php?topic=99369.0
<blockquote>Also all the Menu on left side in Virtuemart Component is not visible. For example I can not acces Tools.</blockquote>
Pls backup your files & try to update VM with latest version 2.0.20b. Send me your admin login for further checking IF the left-side menus in VM backend still are invisible.