Qedo it isn't an issue with your computer, on my pc FileRequest$ also doesn't work but gives other error 'Access Violation Exception', on both Win 8.1/10, it doesn't work in either debug/release modes, and this only applies to v16 (Steam), same code compiled with v15 works properly and opens popup window. Also I can't get those inline examples working, Am I missing some include files or something that's needed to check this?