I have Adobe Acrobat Professional 11.0. It's a dated program but works excellent. Since Flash has reached End of Life, I am no longer able to "Combine Documents." I get an error message that states... "To view the Flash technology content in this PDF file, please install this version of Flash Player that supports Adobe Reader and Acrobat." I click the link and it brings me to Adobe's website where it tells me Flash reached end of life. I'm not able to donwload the player. I chatted with an Adobe tech rep who tried assisting but was not able to do so. He told me to post this message and "Our product expert of Adobe flash player will reply to your thread with a resolution asap." Hoping someone can reply with a solution other than upgrading to DC. Thanks.