multiple sets of conversions on multiple sets of files

[erik@sea]

Hi, I use the following commands saved in a text file test.txt and call the file with nconvert test.txt.
However, nconvert only converts the first 2 tifs and then stops.
I used the example from http://wiki.xnview.com/index.php?title= ... User_Guide.

Has anybody an idea of what I do wrong?
Thanks for any help.
cheers,
Erik

contents of text.txt
### -npcd 2 -size 256x256+0 -ctype grey -corder inter -out tiff -o %_a.tif -crop 0 0 4249 4096

001_2.tif
010_1.tif
### -npcd 2 -size 256x256+0 -ctype grey -corder inter -out tiff -o %_b.tif -crop 0 4774 4249 4096
001_2.tif
010_1.tif
010_2.tif

[xnview]

Please add -overwrite