This sounds odd, I have been away for some time, Due to family matters, but when I saw this pop up in my e-mail, something you may want to check out with https://www.virustotal.com/en/ or use this link https://www.virustotal.com/#/home/upload a very reliable site to check files, but there is a size limit that you can load to be scanned. I to have upgraded to XDP X and it installed with no issues, I have Avast Free, and will be switching to Bitdfender, not sure if Panda saw the install as a false positive.

I just a scan of my install of XDP X (DesignerPro.exe) and these are the results Hope you can see them.

Have tried downloading the install file again, and try installing again after deleting the the install file you first downloaded.