Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
By 16levels Sat Mar 01, 2025 9:53 pm
Wondering if anyone had these issues with JJOS2xl 3.83 on the MPC1000:

MIDI data and note data keeps getting deleted at the end of sequences. This happens only at the end bars of the sequences, repeatedly. Even after notes are re-added, after Play is pressed the notes disappear from the ending bars. In a 16 bar sequence the last bars, 15 and 16 will suddenly be blank after pressing play. I have the max amount of RAM installed.
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By loose_t Mon Mar 10, 2025 4:00 pm
I sometimes have a similar thing happen after a copy/paste. The last 1/4 note of some tracks would be gone. I guess it's a bug? I just re-record the notes back in.
By 16levels Sun Mar 16, 2025 2:28 am
loose_t wrote:I sometimes have a similar thing happen after a copy/paste. The last 1/4 note of some tracks would be gone. I guess it's a bug? I just re-record the notes back in.


Yes, exactly this happens after copy and pasting! I emailed JJ support about it who was aware of the problem but unable to replicate it. They said it occurs when memory is insufficient, but I don’t see that as an issue when looking at the memory monitor page.