I just want to ensure that the problem is related with the environment. You'd find a script at "C:\Bitnami\ghost1230scripts\setenv.bat". That script re-define the PATH environment variable. You'll find a line like the one below where that PATH is defined:
Could you modify that line with a editor (such as WordPad) so you add at the beginning:
That should include the binary which is given problems in the environment. Once you have that set. Open a Terminal, you can use the tool use_ghost which is at "C:\Bitnami\ghost1230" and run the command:
Let's see what you obtain when running the command.