I have just installed PDF24 on my Windows 10 machine, on the recommendation of ComputerActive magazine. I load it, I open (say) the Merge tool and the file selection button simply does not respond to a mouse click. Nor can I drag files into the selection area. Some of the other toolbox buttons do absolutely nothing.
I recall now that I loaded the same software some months ago and found exactly the same. I uninstalled it then. I'm a little less busy now so I am keen to find out why it simply does not work for me.
Sorry I don't have an answer but I do have the same problem with the installation on one of my PCs. On other PCs it works fine. None of the tools work because if I click on say 'merge PDF' the window to add files isn't active. It's just greyed out. Nothing happens at all if I click on eg 'open PDF reader' or 'import from scanner or camera'.
Uninstalling and reinstalling doesn't help. I have the latest version. This doesn't seem to be a common problem but I hope someone can suggest what might be causing it please?