I installed the software last night on my desktop computer and it is still "installing an update". The installation of my laptop computer has completed; so, I'm curious if there's a problem with the desktop computer installation?
you tell me why you react with a question (which is already a year old)
and the question has nothing to do with the subject. For your question,
tell us OS, TM version and i think a reboot give also a answer, after
reboot TM can go on with the install.