Just today i got a message from Kaspersky that the installer.exe is a Trojan: "pdm:trojan.win32.generic", then after antivirus was done(it deleted this exact file and cured sone others) and restarted the computer i opened Opera again and the same thing happend. After that i deleted all extentions cleared the cache and everything else like browser history and all cookies. Then antivisus did the same thing as before and i restarted computer and as soon as i opened Opera the same this happend all over again. I desised to reinstall Opera but it didn't help, everything happen again as soon as i clicked install button in a setup programm. The thing is that Kaspersky updaded its servises and maybe it has something to do with that.
Opera GX