As the first step, we recommend you to check if this computer meets the requirements in order to work with your Slingbox and SlingPlayer software. The following link will provide you with the information to check.
If it does, you will need to contact your computer provider in order to update the OS version.
I am having the same issue while installing version 2.0.4522 and am not able to resolve. I have attempted to update ISScript as per the error message to latest version (9), also have tried to re-install the ikernel.exe with latest version via ikernelupdate tool, but problem still persists. seeing as these updaters dont actually update the .dll file, i also attempted to replace the .dll (version 6) with version 11 - no fix. pushing this problem off as an OS Version issue, or refer to OEM seems like a lazy solution to this problem. Older version of Slingplayer (v. 184.108.40.2068.us) installs successfully. At the least, please provide links to dependent software installation files.