Something definitely changed with how Corona handles symbolic links, and while it was the cause of the BUILD ERROR, I don’t think now that it was the cause of crashing.
The cause of the crashing is that I was overriding the function, table.concat(), which in the simulator is fine, but on a real android device it crashes hard.
seanh, to answer your question: I have many corona projects (e.g. game1, game2, game3, … game8), that share core code, fonts, images and sounds. For instance, I have a lua file called _utils.lua that I use in all my games. Whenever I make a change to _utils.lua, I really don’t want to have to replicate that change to all 8 of my game folders, so instead, I have a separate folder called corona_shared that houses _utils.lua and other shared resources. Then, each of my game folders contains a symlink to _utils.lua rather than their own copies of _utils.lua.
The BUILD_ERROR was happening because I had deleted some files from corona_shared, but had not deleted the symlinks in the games folders. Before, this was not an issue. Today, it was, and had to delete the old symlinks.