It is really frustrating because it could work so well.
1) PharoV10.sources and iPhone.changes shouldn't be part of a distribution of a deimos application, but you can add them for development purposes. Easies way is to add PharoV10.sources to the project and it will be deployed when compiled and therefore located by pharo.
If you want to simply disable those warnings you can execute this:
Preferences disable: #warnIfNoSourcesFile.
Preferences disable: #warnIfNoChangesFile.
2) Deimos is much more advanced now, but to handle properly the callback logic I had to change things on the VM... yes, unfortunately, right now, deimos runs on a fork (which I hate, but for now is unavoidable... I think john will release squeak 5.3 with this changes, but I'm not sure about that).
If you are interested on run Deimos after all, I can send you the sources :)
Cheers,
Esteban