It probably was not "Customizable GEDCOM" because that is only intended for use when you need some special export method not provided by other options - and then it is proceeded by editing the "Customizable GEDCOM" script to add your custom needs.
To export an album, it is better to use the built in export tool:
1. Choose menu command File->Export->GEDCOM Data"
2. Pick the album to export
3. Choose other options and export
The help window has more details at
1. Open GEDitCOM II Help
2. Expand "Genealogy Files" and click on "Saving Genealogy Files"
3. Click on "Exporting a subset GEDCOM File.
A slick way to export any subset files (at least I think it is slick) is to
1. Create a new file while main file is open
2. Drag any records you want to the new file (such as all in an album, tree, etc.)
3. When done dragging, export the entire new file