# Development Profile **URL:** \ **Category:** iOS\ **Created:** [January 14, 2017, 11:48pm UTC](https://forum.xojo.com/t/development-profile/35518 "2017-01-14T23:48:59Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Martin\_Fitzgibbons](https://forum.xojo.com/user_avatar/forum.xojo.com/martin_fitzgibbons/32/259_2.png) [@Martin\_Fitzgibbons](https://forum.xojo.com/u/Martin_Fitzgibbons)\ **Post date:** [January 14, 2017, 11:48pm UTC](https://forum.xojo.com/t/development-profile/35518/1 "2017-01-14T23:48:59Z")
Sorry to bring this up again in a new thread. I had development profiles working for 2 other apps I was working on but now working on a new one and I can’t build to test on the iPhone. I have read all the past posts and attempted solutions but no luck after 2 days. I am reluctant to delete everything and start from scratch in case my original apps builds that were working stop as well. Does anyone have a system to follow? ---
**Author:** ![Martin\_Fitzgibbons](https://forum.xojo.com/user_avatar/forum.xojo.com/martin_fitzgibbons/32/259_2.png) [@Martin\_Fitzgibbons](https://forum.xojo.com/u/Martin_Fitzgibbons)\ **Post date:** [January 15, 2017, 2:49am UTC](https://forum.xojo.com/t/development-profile/35518/2 "2017-01-15T02:49:31Z")
What does it mean “Could not find Developer Disk Image” when I connect my test iPhone and look at in Xcode Device list? After bitting the bullet and resetting my Development Identity in Xcode it actually built a new project but when you try and add it to the device you get the above error. Maybe if someone has a list of all the things I need to delete from keychains and profiles it might be easier to start again… and again… ---
**Author:** ![Martin\_Fitzgibbons](https://forum.xojo.com/user_avatar/forum.xojo.com/martin_fitzgibbons/32/259_2.png) [@Martin\_Fitzgibbons](https://forum.xojo.com/u/Martin_Fitzgibbons)\ **Post date:** [January 16, 2017, 10:03am UTC](https://forum.xojo.com/t/development-profile/35518/3 "2017-01-16T10:03:38Z")
Go figure deleted everything again today and it wants to work?? ---
**Author:** ![system](https://forum.xojo.com/uploads/default/original/1X/455b4dcc0e61630e9f81940004ddffa49c432a46.png) [@system](https://forum.xojo.com/u/system)\ **Post date:** [October 29, 2020, 6:36pm UTC](https://forum.xojo.com/t/development-profile/35518/4 "2020-10-29T18:36:54Z")