The swap is not finished. There are some people with the old coins who missed the process, they can still swap them. The last one was last week with 1 coin (tx id: 33cda966a96e059d76aa79d51c7f3157e861e3142b9705c0cbc77907b6944943). Also these coins generate ~90% of all PoS blocks now, so it would be better not to touch them now.

Are you trying to run 42-gt.exe from the external drive?

Try this:
1. Make a shortcut of your 42-gt.exe file. 2. In the same folder with 42-qt.exe create a new folder with the name "database". 3. Right mouse button click on shortcut, choose "Properties", in the field "Object" add: < -datadir="database"> (should be like this: E:\42-qt.exe -datadir="database"). 4. Run your 42-qt by 2-click on shortcut.