Sprite Sheet Maker

[Dazz]

Hmm, having issues using the maxwidth setting - it's simply putting out an error:

Code:

Exception in thread "main" java.lang.NullPointerException
        at SheetBuilder.makeStrips(SheetBuilder.java:208)
        at SheetBuilder.fsearch(SheetBuilder.java:141)
        at SheetBuilder.fsearch(SheetBuilder.java:136)
        at SheetBuilder.main(SheetBuilder.java:46)

Also, a means of vertical alignment would be much appreciated!

edit: and curiously, it is working on a different folder. I'm not quite sure what that's about...