Reference manager importing

Dear All,

I need remote support.

I use Endnote web for my research . I usually use the RefMan option when importing references and this has worked for several years. But last week ,i installed Citavi trial version just for practicing how to use the software. Then i noticed yesterday that each time , i tried importing a reference from Google scholar or any other scholarly repository, the citavi icon pops up after selecting RefMan as import option. i noticed some conflicts with the two softwares , so i uninstalled citavi, rebooted my system and also did a system restore. but i am not still being able to perform imports again as i used to with my End note web. That is the error messag ei get. I tried installing Reference Manager (RIS) Export from the EndNote web web page but , I couldnt see any suitable app with which to open it. Here is a screen shot of the apps I saw while trying to download teh RIS : .Any help will be highly appreciated.

I got an error message saying that the RIS application was not found