the define-package problem

[GengShen]

I'm using the emacs 24.5.1 in terminal.
problem: A error "invalid symbol %%version%%" raised while emacs loading theme.
analyse: I found that the function of define-package in color-theme-solarized-pkg.el run false.
this is the code :
(define-package "color-theme-solarized" "%%version%%" "Solarized themes for Emacs" '((color-theme "6.5.5")))
Maybe the second arg (_version-string) don't accept the string contains the character except number. After "%%version%%" was changed to the string only contain number, the function define-package worked without error .