@vanhilla_chrisis From the MOPAC manual: you should have a folder structure in which you have a directory for results and one for calculations.
Each calculation is assigned a separate subdirectory in the calculations folder.
If a calculation doesn't work, you take note of why it didn't work; delete the directory and create a new one with the appropriate corrections.
If a calculation is successful you copy all relevant files in the results folder and delete everything else.

In this way you don't have these kinds of problems and you don't have a bunch of useless stuff on your filesystem.