I'm using a script to write a series of control files of the type CONTROL.xyz into the C:\hysplit4\exec\ directory. I am using the same script in an attempt to run c:\hysplit4\exec\hyts_std xyz for each of the control files generated by the script. For some reason hyts_std is not able to find the control file named and behaves as if it cannot find any control file at all. The kicker is that the executable writes a series of empty MESSAGE.xyz files to a directory on another drive so it is finding the control files but just doesn't seem to be acting on them. When I look at my windows task manager, I have several hundred instances of hyts_std active and waiting for user input.

Can anyone help me figure out what is happening? Thanks in advance!
Erik