SysMetrix 3.45 Setup shows error

Hello,
I was running the installation wizard for SYSMETIX yesterday which is a system monitoring software. Everything was doing well and I went to Next steps until this error below occurred. Please at the image below and tell me what to do.
I am using Windows 7.

Error opening file for writing:
C:Windowssystem32MSCOMCTL.OCX
Click Abort to stop the installation,
Retry to try again,
or Ignore to skip this file.
