Hi Orly,
I know we went through this already, I just want to reply to the post so that future reader can benefit from it.
So, as we talked before, the trouble was probably in setting the correct pathway to the created file. When having the executable and the files in different folders, there is a need to type the pathway to the file in a DOS/Unix way. For example, if this is the directory tree:
+popabc_win
+bin
| popabc.exe
+examples
| toytable.len
in order to access the file toytable.len from popabc program, one should type:
..\examples\toytable.len
To avoid all this pathway typing one can simply copy all the files and executables to the same folder and run popabc from there.
Joao