I have a very strange issue. I just updated to 15.1.2.189 and noticed that I could not access a particular virtual path directory. The directory is visible via the mobile HTML site and any FTP client and I can see its subdirectories but when I try to navigate the subdirectories, I get an error that says the directory or file is not available. Sorry, I neglected to write down the actual error message. I am able to access another virtual path directory which is on the same computer that contains the non-accessible directory. There is no difference in the two virtual path directories other than each one is pointing to a different drive. Also, the mobile site's background is now black and it sucks!
I re-installed the previous version (15.1.1.108) and now I can once again access that directory.
I'm assuming this is a bug with the latest version. How can we find out what's causing this?