The first release of StumbVerter supports 5000 APs with GPS, as the memory array I dimensioned for this is only 5000 large - I didn't think anyone would get more than 5000 APs, at least before I released a version capable of merging files into a single map, etc.
So, now that I have to release the next version (I've set an array of 25000 elements), how many APs would you think will be eventually imported? I suppose I could resize the array dinamically, but that's a lot of changes in the code, and it's going to take some time, and I've got a family to feed

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Regarding the extended summary support, it's not done at the moment, but plans are for being able to import all data for a particular AP and plot it, to create some form of signal map.
All the best,
Mother