Can't enable MinimServer on QNAP TS-109

[nickc]

Before I went away for a fortnight recently, MinimServer was working brilliantly on my old QNAP TS-109. While away from home we always switch everything off to avoid thunderstorm damage. I powered down the QNAP using the web admin page. When I returned a couple of days ago and powered up the QNAP, I discovered MinimServer was no longer running. When I log into the QPKG admin page the MinimServer icon is greyed out and the application status is "disabled". Every time I try to enable it, it only turns green/"enabled" on the second attempt, and then only stays thus for a few moments, before reverting. I've tried uninstalling and reinstalling (v0.8.3-arm.qpkg) but get exactly the same behaviour. Rebooting the QNAP has also not helped. There is an error mesage in the QNAP log: "MinimServer start error: Error: dl failure on line 864"
An added complication is that my main desktop (Ubuntu) pc is also down at the moment with some serious problems so I'm unable to use MInimWatch. I'm currently using my partner's pc when it's free.
Any help would be much appreciated - I'm missing the music!