I run chdkptp on Beagleboard (ARM7).
How much RAM does your beagleboard have, and how big is the file ?
Yes, when chdkptp downloads file the memory is busied on 92 percent. I get the following message
unexpected return code 0x2ff
This isn't a crash message, it just means just means the connection was lost for some reason. I'd be looking for something like 'terminated' or 'segmentation fault', 'bus error' etc.
If you look in the system or kernel logs, you will might find something about OOM. If your system is configured with swap, it's possible that things just get so slow the connection dies.
I'll look into making the download function stream to disk this weekend.