When we create a new version of one of our iPhone apps and load it to a device, it shows up as an additional icon instead of replacing/overwriting the old one. Touching the old icon brings up the old version and touching the new icon brings up the new one. This is using ad hoc versions on a debug device — we have not submitted the update to Apple yet.
We have not had this problem with other apps — just this one. I suspect the problem involves certificates, OS requirements, or something in the application’s default plist.
I can share more information if needed, but I’m not sure which info is relevant. Does this ring any bells with anyone?
Are your application identifiers the same? They should be identical.