I just upgraded to Android 9.0 and B4A v9.30 (done the jetifier thing) and I get this trying to install with USB. I will try with B4A Bridge and get back to you. In mean time any suggestions are highly welcomed.
Edit - With B4A bridge it works. Any suggestions for USB?
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Signing package file (private key). (2.00s)
ZipAlign file. (1.02s) Installing file to device.
Error adb: failed to install AG.apk: Security exception: Permission Denial: runInstallCreate from pm command asks to run as user -1 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL java.lang.SecurityException: Permission Denial: runInstallCreate from pm command asks to run as user -1 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL at com.android.server.am.UserController.handleIncomingUser(UserController.java:1827) at com.android.server.am.ActivityManagerService.
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Signing package file (private key). (2.00s)
ZipAlign file. (1.02s) Installing file to device.
Error adb: failed to install AG.apk: Security exception: Permission Denial: runInstallCreate from pm command asks to run as user -1 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL java.lang.SecurityException: Permission Denial: runInstallCreate from pm command asks to run as user -1 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL at com.android.server.am.UserController.handleIncomingUser(UserController.java:1827) at com.android.server.am.ActivityManagerService.
Edit - With B4A bridge it works. Any suggestions for USB?