The full version has been having some work done fixing database problems and a few other revisions, but should be back in the iTunes store by early March. ps Yes, I have changed this date 4 times now!! Multiple promised deadlines in getting this done haven't been met - sorry about the delay. I hope I don't have to change it again!
Apparently the saving of progress to the database was done in a very shonky way by the original developers, meaning that it couldn't cope with the large amount of data in the full version (but the smaller lite version is okay). So, the whole method of saving is being changed, as well as sub-dividin the levels, adding a help screen, and a few other small things. It's taken much longer than imagined, but was apparently necessary. My apologies again to anyone waiting on the update.
Oliver Rose in Kansai, Japan