Installed Roundcube how Do I Get My Blog Back

I was trying to add an email client for my wordpress blog so that customers can use the website mail rather than my personal email.

I installed roundcube successfully and when i went to reload my website http://nicheblend.com

I get a white error page saying that roundcube does not allow the action to open the webpage.

I dont want roundcube if this is the case i just want my blog back to the way it was… I have 3 months worth of post and work on that blog.

Please tell me i can get it back…