Error while downloading Ultimate Branding plugin

Just signed up to get the Ultimate Branding plugin. Got a zip which contained your dashboard. Installed it, logged in and tried to install the Ultimate Branding plugin via the dashboard. I get this error:
Laster ned installasjonspakke fra (…

Nedlasting feilet. error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm

Norwegian translation:
"Laster ned installasjonspakke fra" = "Downloading installation package from"
"Nedlasting feilet." = "Download failed"

Please help.