Hi, I have followed the same tutorial, and found no problem in installing the sample. The "Unable to install" message is very common problem in the Symbian world, and it can happen because of many things. Usually it happens because of error in packaging or if there is an application with different name but with the same UID already installed. I suggest you to: - check your sis file using http://www.whythefuckwontmysisfileinstall.com/index.html - check your sis file using SISXplorer http://www.symbian-toys.com/sisxplorer.aspx - check if you have another application with same UID, because I think the UID used by the pjsip example is used by many other sample applications. -- Regards Yohanes On Mon, Apr 7, 2008 at 5:28 AM, S Coleman <scoleman2012 at gmail.com> wrote: > I've gone through the (excellent) tutorial at > http://trac.pjsip.org/repos/wiki/DevelopingSymbianAppWithCarbide. I can get > the application to build but I can't get it to load in my device (Nokia > E61i). I've tried a couple signing options. When I self-sign using Carbide I > get the error "Can't open a protected application from an untrusted source". > When I try to sign using Symbian open signed I get the message "Unable to > install". > > Note: I have Changed the settings on my device in App Manager in Software > Installation, from Signed only to All. > > Any ideas? > > Scott.. > -- Regards Yohanes http://tinyhack.com/freewarelist/s603rd/