Unable to reinstall Trados Studio 2015

Hi,

 

My Trados Studio 2015 didn't open, so I tried what I read on the forum (uninstall it with the removal tool, run a cleaning tool and reinstall it), but now I'm not able anymore to install Trados Studio. Please see below a screenshot of the error message. What should I do? I wanted to do what the error message says, but I don't know where I can find that log file... It's the second time I have issues with Trados Studio this month, I'm starting to get tired of it. 

 

Thank you very much for your help in advance!