It goes to a black screen with a yellow sign with

Had this same issue. Your probably trying to play either Crank2 or StarWars. Talked to Panasonic Tech Support and they said not enough memory to play disc and gave me these instructions:

"This movie title requires that an SD card of 128MB or larger to be inserted into the BluRay player prior to inserting the BD disc each time you watch this movie.

The SD card must be formatted in the BlRay player before use. (Do not format the SD card on your PC)

Formatting an SD card in the player:
-Insert an SD card (1GB or higher) into the SD slot of your BluRay
-Press [FUNCTIONS], select "other Functions" and press [OK]
-Select "Card Management" and press [OK], then follow the on-screen commands

Once formatting is complete, leave the SD card in the SD card slot. Insert the movie disc into the BluRay player and it should play normally."

Personal note, the bar graph that has always stopped at the red will hesitate for quite a while and then the rest of the bar will fill up and BD will begin to play.