EXIT CODE 255

[marlboroguy58]

hi, i have a script which extracts data from a flat file, formats it and populates that data into an Excel sheet. I noticed that if the flat file is small, the script runs and exits with code 0, but if there is a lot of data the same script populates some part of the data and exits with code 255. i m not a perl expert, but think that the perl.exe is losing the CPU time and hence exiting...not sure.. i m using windows XP professional. once i run the script there will be 2 processes running perl.exe EXCEL.exe as soon i run the script i set the priority of the perl.exe process to "real time", the script runs succesfully, but with the default priority it exits with code 255. how do i prevent the script from coming out...is there a way i can set the priority of the script from within the script..