Not sure where to leave this since I can't seem to comment on the pages.
If you select the Alucard Swords (the evolved orange version) from the Super Candybox II Turbo while all your other weapons are already evolved, it can't be leveled to max level and be evolved into the Alucard Shield. It can still be upgraded via Limit Break, but these levels do not count as normal ones apprantly.
Solution: get another weapon either in the level or through a regular Candybox. This will then allow you to select Alucard Swords in the normal levelup menu and it will be Lv1 even if you upgraded it with Limit Break.
I'm assuming this also happens for other evolved weapons that can evolve/combine again but need to be leveled up to do so.