Adler's court appearance came a day after TV audiences watched him graduate from a drug-treatment program that is the focus of VH1's show "Celebrity Rehab with Dr. Drew."
Adler missed a court appearance last week, but told the court on Friday that he had been in another rehab program that he completed just earlier in the day.
Los Angeles police arrested the rocker in July. He was charged with felony drug possession and a misdemeanor count of being under the influence of drugs. Adler will remain on probation while he tries to complete the state program.