This error might occur for a couple reasons. If you are installing from a DVD then there is an error reading the file from the DVD. This could mean the DVD is scratched or the laser in the drive has a dirty lens. If it is a set of installation files stored on a network then there is a transmission issue with the network that is not allowing the installation manager to retrieve this file. If it is a set of installation files stored on your local drive then the file could very well be corrupt.
In all cases though the way you might fix it is to download a new installation file set. Since you are installing 2013 SP2.0 I suppose you might be off maintenance so you would not have that option. In that case, if this is a DVD, try copying the files from the disc into a folder on the hard drive and run the installation files from there. If the copy from the disc fails try a different machine with the same disc. If it keeps failing on a different machine then you probably need to replace the disc.
There are a lot of ifs in that explanation. If you have more information about what your specific setup is let me know and I can give better advice.