djnoah wrote:

Hello/Hi/Greetings,

Can filenames contain numbers?  That is a serious limitation if filenames cannot contain numbers.

Yes.  It can not accept anything other than letters [a-z A-Z], number [0-9], spaces, dashes [-], dots [.], and underscores [_].

I had a problem where my -//:---\spam would name pictures taken in the same second and append parentheses around each subsequent picture.