err.log

File err.log is malware or can be infected by malware:
DriveCleaner Ransomware, SystemDoctor Trojan, WinAntiSpyware Adware, WinAntivirus Ransomware
You must run antivirus software as soon as posible to check you computer.

Download ExterminateIt! to instantly get rid of malware!

Also Be Aware of this dangerous files:

Also Be Aware of the Following Threats:
Removing Pugi.SearchExplorer Toolbar
Keylogger Trojan Cleaner
Neverone Trojan Removal