I believe the Sonic program is trying to update itself.
However, the only way to successfully update, is the purchase an "update" from Sonics website.
When you purchased your PC you found software preinstalled that you did not request, including Sonic. These pieces of software are called Craplets.
The problem is that PC manufacturers won't remove them, because they make money for every machine sold that has these types of software installed.
There is a tool called the PC Decrapifier
, that removes those programs that you wish, such as Sonic.
Feel free to visit the Freeware Replacements For Common Commercial Apps
, if you need well tested products.