It is possible the startup file (.bmts) somehow got corrupted.
For a Windows machine (which I think you have)
Go to file manager and put int the following:
This should put you in the following folder
Then go down one level to “Bome”
There you should find a file named MIDITranslatorPro.bmts
Open it in editor such as notepad (not with Bome MT Pro).
There should be an line that looks like this:
Chang it from Y to N and then restart MT Pro
If that doesn’t work, the same folder has a number of backup files in the same folder. You can copy any of these and paste as the default MIDITranslatorPro.bmts (after deleting or renaming the original), and you should be good to go.
Finally, if that doesn’t work, it may be a Windows issue, just restart Windows.