Hello.
I tried it in lowercase (c:\inetbpub\wwwroot\kenticocms7) and it works fine. No problem appeared. Do you use the latest version of KIM, i.e. did you
hotfix setup files? If not, can you hotfix it and try again? If the problem persists, could you please send me an e-mail to support@kentico.com and attach some screenshots or video? Thank you.
Best Regards,
Radek Macalik