A NonSuit is a voluntary dismissal of the civil case without prejudice. It can be refiled within the statute of limitations but is unlikely.
I would suggest contacting the court clerk or attorney who filed the civil case to see if the asset seized (your money) is in the court registry or whether the plaintiff ( police agency who seized it) has it and ask how to have it released and returned to you. This most likely will require a simple Motion and Order. It may have to be done while the court still has plenary power (within 30 days of the final order).
Most criminal attorneys will be able to assist you if you find you need it. Contact the attorney who represented you in the criminal side of this matter. He/she may be willing to assist you or at least walk you through the steps.
Order of Non-suit means the case has been dismissed by the party bringing the suit. You need to get an attorney and file a motion asking for the return of your cash.
I am not intending this to be legal advice, because I don't know the particulars of your situation. Call me if you would like to discuss this or other isues.