Security Issue

Question

Hi, I have a command line .net application which basically reads csv files and outputs them into one large sorted csv file. The problem is the application needs to be run from a mapped network drive. When i do this using the map network name e.g T:\folder\file.csv I get security I/O exceptions thrown. However when I use the ip address of the server e.g 192.168.0.1\folder\file the program runs properly. Any one else had this issue or managed to resolve it so that the program can use the T:\ drive name. P.s On my server it still works with the mounted drive letter. Its on another server where the issue is taking place! Thanks in advance Alan