I am running the image co-registration workflow in ENVI 5.6.2, but it keeps asking to overwrite the tie-points file, restarting the co-registration and so on and so forth.

I have two file: BaseFile.dat (with corresponding BaseFile.hdr), WarpFile.dat (with corresponding WarpFile.hdr). I try to co-register them with the image co-registration workflow, I reach the window where it runs the co-registration, the progress bar finishes, then instead of completing the procedure ENVI keeps asking if I want to overwrite BaseFile.pts, If I say yes it simply zeroes the progress bar and not produce any input. It waits for me to click "Finish" again, just to restart the co-registration again, reaching the end of the progress bar and again asks for overwriting.

The frustrating part is that I was working with the two files in the L:\ drive. To try and solve the error, I cleared all the .pts files in the original folder, copied both BaseFile and WarpFile to C:\, cleared all temporary files, .pts files, and restarted the PC. Tried to re-run the co-registration procedure and again the overwriting issue appears about L:\BaseFile.pts. A file that was not existing before ENVI wrote it again itself during the new attempt at co-registering the images.

Why is ENVI still writing in L:\ even if I'm working on a copy of the file located in C:\? Why does an overwriting issue appears even if no .pts file exists in the first place but it is created by ENVI contextually with the image co-registration workflow? Could it be that some metadata still exists somewhere? How do I flush them?