Can the PG-200 be used with the Kiwi3P upgrade?No. The PG-200 method of sending data is non-standard and has proven to cause issues as the Kiwi3P upgrade dealt with it. This support has been removed in the PE & 3P firmware and hardware.I cannot get the Edit or Write buttons to work.The memory protect switch must be set to ‘OFF’. This is located on the rear of most synths. The Edit or Write buttons will flash all the Tones lights or display an error and will not allow a write to be made when the memory is protected.Can the Matrix 6 be used with the Patch Editor?Yes. The 6 has an unfinished sysex that does not allow for complete parameter control. This is explained in the user manual. Every parameter we could get working is now covered with the M6r patch.Ableton Live will not record or pass midi on some synths?Ableton Live does not record or pass Sysex codes. Any synth that uses sysex cannot be used with this software and the PE.I tried to upload a new program file to a Kiwitechnics product and it freezes during the Program File upload?The Program file is a large file and if the buffer size and midi hardware combination is not correct all the file will not be sent to the PE or upgrade. If you are using MidiOX then try reducing the Buffer size to 64 or less and add a small packet delay. About 100mS should be enough. This will cause MidiOX to send the file slower so your hardware may keep up better. The PE and upgrades can keep up with full speed but many midi interfaces cannot. Not all midi interfaces have been tested but if it cost $10 it probably will not work. With midi interfaces what you get for what you pay seems to apply.Interfaces we know work, have used and tested here are MOTU Microlite, Roland Calkwalk UM-2G and Midiman Midisport 2x2.