Hopefully you will be able to find the cache with the help of your gps and the photographs I've uploaded.
If you do not manage to find it, I'm sorry but what is a bit of tupperware when you've just traversed one of the best ridges in Scotland?! Hopefully you'll have some views.
The cache itself is a small robust ‘clip and lock’ box about 6 cm square so it should be waterproof and strong enough to survive without attention for long periods. It will take geocoins or small TB’s but I'm not sure I'd leave one up here!
Please don’t clog it up with odd bits of paper or ‘geotat’ that will hold moisture or go soggy – kiddies are not going to come up here to swop “goodies”!
If it is "iced in", rather than risk damaging it trying to prise it out of ice just to sign the log, please take a photo and use that to prove you found the cache. 
When initially placed the cache simply contained a log book and pencil.
It is to the right of the LH rectangular block in the picture above where the people are, just a foot or two below the crest of the ridge.
Many congratulations to chrisnstace for their FTF 64 days after the cache was published (3 months after it was placed)
But still not as long a wait for a FTF as for my GC2P8A8 cache "WINDY COL ON BEINN A' BHEITHIR"!