Hi there I am a university student who has uninstalled a previous version of Solidworks and now trying to install Solidworks 2017-2018 and I keep getting this error. 

I have gone into the directory at HKEY_LOCAL_MACHINE\SOFTWARE\Solidworks\Licenses\Serial Numbers and found the serial numbers for the license were correct and still keep getting this error. I've uninstalled and installed several times and always get this and am unable to install.