The monitor tasks are used to monitor/reading files, conversion tasks are responsible for converting/writing files.
So in your case you should enter the username and password in the Monitor Task (not conversion task) since it appears to be giving the error while trying to READ the file (connect to remote).
Now, coming to the functionality change, I will need to investigate why it isn't working and was working earlier. Do you have any mapped drives that you're using from the \PSF server/computer?
Can you attach the MCEBuddy.log file.
So in your case you should enter the username and password in the Monitor Task (not conversion task) since it appears to be giving the error while trying to READ the file (connect to remote).
Now, coming to the functionality change, I will need to investigate why it isn't working and was working earlier. Do you have any mapped drives that you're using from the \PSF server/computer?
Can you attach the MCEBuddy.log file.