Jervis, Thanks for the bug report. This appears to be a new bug, but we will get it fixed. It won't be in the next update, because we have already submitted that to Apple, but it will be in the one after that. Sorry for the inconvenience.
I believe the question has been asked before but here it goes again:
Once upgraded to iPhone OS4.0, my iphone cannot run the 2Do app anymore. It dies immediately after being launched.
Any upgrade we can expect soon in the future ??