Nikki Lund claimed the rocker pointed a gun at her and was physically abusive towards her before they broke up, but she never reported it, according to L.A. County District Attorney's officials.

Lund only went to the police recently after learning from her publicist that Sambora had been overheard threatening to throw acid in her face.

But the publicist told investigators he only warned Lund "bad things" could happen in a bad break-up, and his client misunderstood him, according to TMZ.com.

Prosecutors leafed through emails and texts between Sambora and Lund, and came to the conclusion the whole thing was a misunderstanding following a business deal that went awry.