sequence memory full on the 120th bar???

I recently purchased an mpc5000, was working away on a track when i reached the 120th bar on the first sequence, i went to repeat the last 8 bars of the track and when a message flashed up "sequence memory full". the mpc can hold up 999 bars per sequence so i really don't know what's going on. is this a bug??? i've tried everything, please help me!

999 bars per sequence is correct but did you setted up to run at 999 bars? Are you even looking at the 5000 or your neck hurts?! Check it out and set it up correctly and call yourself potatoe-head for now on.

Press Mode + Pad 4, so press window it will shows the memory avaible if it's full you need to purchase the akai exm-e3 ram or you can record your sequence with the hd recording feature....i know it's a fraud