Hello Klaus, Nope, I do not think you need to recreate your self-signed certificate - the version of the Build-Tools that are installed when the certificate is created does not affect the certificate.
Did you follow this lesson to create the key, specifically the section about using Android Studio? https://lessons.livecode.com/m/4069/l/32674-how-do-i-create-a-self-signed-certificate-for-an-android-app Did you add the extension ".keystore" to the filename of the certificate you created? Kind regards, Panos -- On Tue, 14 Oct 2025 at 20:47, Klaus major-k via use-livecode < [email protected]> wrote: > Hi Panos > > > Am 14.10.2025 um 19:43 schrieb Klaus major-k <[email protected]>: > > > > Hi Panos, > > > > thank you, I had SDK Tool 34 installed? > > > > Removed it and installed 31 (and the obsolete 26, too) > > It now get to the signing, but there I get this error (again, > > get the same error with my last key?) > > ----------------------------------------- > > There was an error while saving the standalone application > > signing failed - keystore load: Invalid keystore format > > ----------------------------------------- > > > > Same as with my last selfsigned keystore!? > > What on earth is going on with my setup? > > maybe I need to create the selfsigned key again with SDK 31 installed? > Maybe that will cause the error? > > -- > Klaus Major > https://www.major-k.de > https://www.major-k.de/bass > [email protected] > > > _______________________________________________ > use-livecode mailing list > [email protected] > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ use-livecode mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
