Thanks, I'm going to forward this along to the installer team. In the meantime, please use the installers located in this FAQ post:
I met the same problem...
1. I download two exe files: "install_flashplayer11x32_mssd_aih.exe" and "install_flashplayer11x32ax_gtbd_aih.exe";
2. I execute "install_flashplayer11x32_mssd_aih.exe" with admin privilege and then it disappeared;
3. after 2, I execute "install_flashplayer11x32ax_gtbd_aih.exe" and the alter window of "Only a single instance of this application can run." popup;
is there something wrong?
Hey, I have been fighting this problem for over a week now. Just figured things out today. I had installed Microsoft Silverlight a bit ago. I think that is the "other instance" that the computer was trying to tell me was interfering with installing Adobe Flash. I think it is a version of Flash Player. I uninstalled it and then installed the 64 bit version of Adobe Flash for other browsers (other than Iinternet Explorer). The Flash player now works with Safari and Firefox. There was a suggestion to download Google Chrome since it has an integrated Flash player and I did that. It worked great from the start, but I still wanted to use my other browsers. There was a version of Flash Player just for Internet Explorer, but I did not install that since I am uncertain whether or not I am going to use Explorer going forward. It has been acting up. I really hopes this helps some of the rest of you.
Use the link in the post above to download the correct Flash Player.