MP3Tag help please.

[DaveK]

I have just loaded MP3Tag on my Win8.1 PC and seem to have hit an impasse. I can load the folder I wish to play around with but no way can I get the program to activate or analyse this folder. I've looked at all the available options on the menu/tool bar at screen top left without finding anything I recognise as the 'starter'. The annoying thing is that I used it a few weeks ago with great success but had to delete the program as part of a 'refresh' process.
Can anyone tell me what I'm missing please?
TIA,
Dave.

[Gazjam]

Are you running the most up to date version Dave?
Some murmurings on various forums (forii?) about 8.1 problems.....