You could have helped me a little by describing in detail the actual scenario. Nonetheless, let us work with what you have stated but ill have to make a few assumptions. I would assume that you don't get any error message after running Tantra. I would also assume that the Xtrap runs, but shuts down Tantra thereafter.
Steps to follow.
1. Open K12 folder.
2. Copy Xtrap folder and hide it somewhere.
3. Delete Xtrap folder.
4. Run Tantra.
5. Run file check.
6. Play the game.
...if at this point you did not get an error, i assume your problem has been solved.
However, if you received an error... you need to state that error. Since we don't have that yet. You can follow
the following procedures.
1. Check the new Xtrap folder in your K12 folder if it contains the updated files. (It should contain 9 files.)
2. If none, copy the save files (from Step 2 of Previous Set of Instruction) and save it to the new Xtrap folder.
3. Run a file check.
4. Play the game.
At this point, I'm hoping you can already get into the game.