I've just installed LR 5.5 on Windows 8.1. It is a virgin install -- no version of Lightroom has ever been on that computer. Elements 12 is on that computer. When I first ran Lightroom, it wanted to convert the Elements catalog, so I let it. No errors. While I am not new to Elements, I am brand new to LR, so I started to resort to "Help". Selecting "Lightroom Help..." or any specific module's "Help" gives me the same thing -- no error message, and no help either. Not even a continuation dialogue. So, I tried "Check for updates". Same result.
Has anyone seen this? I also uninstalled, and reinstalled (64-bit). Nothing good to report.
Merely uninstalling/reinstalling LR 5.5 was not enough. I uninstalled, downloaded it, again, from Amazon, then installed. The two problems I mentioned have been fixed. Another problem that I did not mention seems to have been fixed. After the initial installation, I was unable to export a file. It seemed to queue the task, forever. After the uninstall/download/install, the very same export operation now works.