missing latlon causes JOSM crashes
In January '13, a Doug Brown reported vandalism on Tagging.
His work, "shrimp pond dikes" had been erased.
He was advised to do a Revert but didn't succeed having Revert work on his JOSM.
So, I made it for him, and that produced shrimp_pond_dike.osm.
Strangely, a number of its nodes are swiped into the upper left corner.
As Doug was hesitating, I wanted to improve the file by removing the way beam.
But as I tried to remove those ways or nearby ones, JOSM was repeatedly crashing.
JOSM was staying alive, though, and that produced shrimp_pond_dike_r.osm.
Then, curious me wanted to know more, peeked into the file and I understood.
The corner nodes had no lat= lon=.
So, I added fake latlon values, the beam moved to there and JOSM stopped crashing.
Then, separating parts of the beam produced shrimp_pond_dike_OK.osm.
(unless I invert the last two files)
Doug was delighted with this file and so were the shrimps a few weeks later.
You may want to play with the first file and see while JOSM crashes if it still does.
You may want to investigate while there were no latlon.
More information on the mailing list and in the OSM history.
But, unless I forgot something, don't ask me more.
"That's all we know" ;-)