I was having a problem with the theme my blog is built on, so decided to try a different theme. After activating a new theme, when I went to "view site" entire page was blank. I was in post editing at the time in a different window, so went back there and from there went to appearances and theme, and again got a blank page. I cannot even log in now.
This is an active blog that I need to get back online ASAP. Anybody got any suggestions?
Hope someone can point me in a helpful direction.