I am having the same Error 1001, etc problem 3.0.5 (build 2602). The work-around of killing and restarting the app temporarily allows sync to work, but then the problem quickly returns.
Its unfortunate, that Toodledo was unable to prevent this pervasive bug from impacting the field. I would like to know what is the ETA for an update? Has a fix been submitted to Apple at this point?
Absolutely hate the mobile update. Its hard to imagine how someone can think its an improvement. Please bring back the much better and near perfect Toodledo classic.