Vanessa Hudgens by Steve Granitz/ WireImage.com Vanessa Hudgens by Steve Granitz/ WireImage.com

A music producer has filed a $5 million lawsuit against Vanessa Hudgens, accusing the star of breach of contract and failure to pay him his share of earnings.

Per documents filed in Los Angeles Superior Court on Monday, the 19-year-old signed a court-approved agreement in 2005, when she was a minor, with Johnny Vieira, which stipulated that she must share advances, royalties and merchandising revenue with him. Hudgens and her father Greg negotiated a deal to get out of the agreement once she landed High School Musical, but the two have not held up their end, Vieira claims.

Two audit reports show that Vieira is owed money; however, Hudgens, who's since recorded two albums and just wrapped High School Musical 3: Senior Year, refuses to reimburse him, the documents state.

The problems don't end there for father and daughter. Vieira is also suing Greg Hudgens for defamation of character, asserting that the elder Hudgens labeled him as a "predator" in various e-mails to third parties. - Joyce Eng