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Didn't the State remove the duty to inform altogether a year or two ago? And regardless, if you didn't have a firearm on your person, you had no legal duty to inform. Did you consent to the search of your car, or did was this a "Terry search"?

(from Wiki: Terry v. Ohio, 392 U.S. 1 (1968), was a landmark decision by the United States Supreme Court which held that the Fourth Amendment prohibition on unreasonable searches and seizures is not violated when a police officer stops a suspect on the street and frisks him without probable cause to arrest, if the police officer has a reasonable suspicion that the person has committed, is committing, or is about to commit a crime and has a reasonable belief that the person "may be armed and presently dangerous.")

What you have described doesn't sound right at all. I hope you got the officer's name. You shouldn't need to worry about having your CHL revoked - it sounds like the officer involved doesn't have the slightest idea what he's doing. It would be a good measure to call DPD and be persistent in voicing your concerns regarding the stop to some official. They are a sprawling, very busy department - getting a hold of the right person might take some effort, but I think you ought to do it anyway. Everyone benefits when the community provides feedback on the "services" rendered by the department.