it seems to load the table but I get an incorrect table load (it seems to start from the third line of the file and I get a wrong columns number)
Note that it is not an issue concerning the csv file format because if I put the very same file in the same path where the application starts, all is right.
How to use different folders for storing/retrieving csv tables?
I don't understand what was wrong... I rewrote all the code and now it works!
At least now I am sure that including "/../.." etc. in the filename it's the right way to make refernce to files in different paths.