ASUS RT-AC57U transmission error


I need a little help! I have a ASUS RT-AC57U router with openwrt. I installed the transmission torrent client. I have more torrents in the client, what the torrents is paused and the client say this error:

Unable to save resume file. Bad adress.

My settings file is this:

    "alt-speed-down": 50,
    "alt-speed-enabled": false,
    "alt-speed-time-begin": 540,
    "alt-speed-time-day": 127,
    "alt-speed-time-enabled": false,
    "alt-speed-time-end": 1020,
    "alt-speed-up": 50,
    "bind-address-ipv4": "",
    "bind-address-ipv6": "::",
    "blocklist-enabled": false,
    "blocklist-url": "",
    "cache-size-mb": 0,
    "dht-enabled": true,
    "download-dir": "/share/hdd1/Downloads",
    "download-queue-enabled": true,
    "download-queue-size": 3,
    "encryption": 1,
    "idle-seeding-limit": 30,
    "idle-seeding-limit-enabled": false,
    "incomplete-dir": "//Downloads",
    "incomplete-dir-enabled": false,
    "invalid-key": false,
    "lazy-bitfield-enabled": true,
    "lpd-enabled": false,
    "message-level": 1,
    "peer-congestion-algorithm": "",
    "peer-id-ttl-hours": 6,
    "peer-limit-global": 45,
    "peer-limit-per-torrent": 15,
    "peer-port": 51413,
    "peer-port-random-high": 65535,
    "peer-port-random-low": 49152,
    "peer-port-random-on-start": false,
    "peer-socket-tos": "default",
    "pex-enabled": true,
    "port-forwarding-enabled": true,
    "preallocation": 0,
    "prefetch-enabled": false,
    "queue-stalled-enabled": true,
    "queue-stalled-minutes": 10,
    "ratio-limit": 2,
    "ratio-limit-enabled": false,
    "rename-partial-files": true,
    "rpc-authentication-required": true,
    "rpc-bind-address": "",
    "rpc-enabled": true,
    "rpc-host-whitelist": ",192.168.1.*",
    "rpc-host-whitelist-enabled": false,
    "rpc-password": "{47e3cbc3e287fbfcbf0f991f23aec660644bb9cafteBRIv2",
    "rpc-port": 9091,
    "rpc-url": "/transmission/",
    "rpc-username": "transadmin",
    "rpc-whitelist": "",
    "rpc-whitelist-enabled": false,
    "scrape-paused-torrents": true,
    "scrape-paused-torrents-enabled": true,
    "script-torrent-done-enabled": false,
    "script-torrent-done-filename": "",
    "seed-queue-enabled": false,
    "seed-queue-size": 10,
    "speed-limit-down": 2000,
    "speed-limit-down-enabled": true,
    "speed-limit-up": 100,
    "speed-limit-up-enabled": false,
    "start-added-torrents": true,
    "trash-original-torrent-files": false,
    "umask": 0,
    "upload-slots-per-torrent": 5,
    "utp-enabled": true,
    "watch-dir": "/share/hdd1/Downloads",
    "watch-dir-enabled": true

I see the resume folder, some resume files. What is this error?

Have you run out of disk space?
mount; df -h

I have 6TB free space.

I had the same error and resolved it by increasing mem_percentage in config file as in this issue

It appears Transmission gives this error when it's out of memory (actually it's also written with more details in system/kernel log). I have 128MB RAM and my mem_percentage was at 50%. Transmission was running fine for couple of years, but when I first downloaded a torrent with size of 190GB (8 files, 25 GB each), it was giving this error frequently at around 90% of progress bar. When I increased mem_percentage to 60%, the errors stopped and download finished without problems.

Why exactly was transmission out of memory I don't know. I had bigger single files before (single 50GB file was not an issue), also at the time of the error I had only 2 other active torrents, but without any active DL or UL, so total # of torrents is probably not a problem. I think it might be the size of the total torrent that is the main factor.

More details on syntax and config file locations: