Android Question B4A Bridge run problem

[Gearcam]

Now on B4A V 5.5 but my main app will not run it compiles ok

B4A bridge is connected and is stable
I use and have done so for ages note 4 now has 5.1.1 android
it compiles ok no errors
Then transfers to phone OK
askes to install I press install it seems to transfer then I get the error "App not installed"

Log below no error on PC (running win 10)

LogCat connected to: B4A-Bridge: samsung SM-N910F
--------- beginning of main
sending message to waiting queue (CallSubDelayed - UpdateStatus)
Connected to B4A-Bridge (Wifi)
sending message to waiting queue (CallSubDelayed - UpdateStatus)
Installing file.
log_dcs ThreadedRenderer::initialize entered!
running waiting messages (2)
** Activity (main) Resume **
Setting install_non_market_apps has moved from android.provider.Settings.Global to android.provider.Settings.Secure, returning read-only value.
Timeline: Activity_idle id: android.os.BinderProxy@1f2f41f1 time:41317648
Installing file.
** Activity (main) Pause, UserClosed = false **
--------- beginning of system
updateVisibility : ActivityRecord{35d96e94 token=android.os.BinderProxy@1f2f41f1 {anywheresoftware.b4a.b4abridge/anywheresoftware.b4a.b4abridge.main}} show : false
log_dcs ThreadedRenderer::initialize entered!
** Activity (main) Resume **
Setting install_non_market_apps has moved from android.provider.Settings.Global to android.provider.Settings.Secure, returning read-only value.
Timeline: Activity_idle id: android.os.BinderProxy@1f2f41f1 time:41354373
** Activity (main) Pause, UserClosed = false **
updateVisibility : ActivityRecord{35d96e94 token=android.os.BinderProxy@1f2f41f1 {anywheresoftware.b4a.b4abridge/anywheresoftware.b4a.b4abridge.main}} show : true
** Activity (main) Resume **
Setting install_non_market_apps has moved from android.provider.Settings.Global to android.provider.Settings.Secure, returning read-only value.
Timeline: Activity_idle id: android.os.BinderProxy@1f2f41f1 time:41403248
** Activity (main) Pause, UserClosed = true **
sending message to waiting queue (CallSubDelayed - UpdateStatus)
Connected to B4A-Bridge (Wifi)
sending message to waiting queue (CallSubDelayed - UpdateStatus)
Connected to B4A-Bridge (Wifi)
sending message to waiting queue (CallSubDelayed - UpdateStatus)
Installing file.

 

[Erel]

Is the app already installed on the device? If yes try to manually uninstall it.

 

[Gearcam]

Perfect worked and now runs ok but don't know why ?

 

[Erel]

It was previously signed with a different certificate (my guess).

 

[ktlua]

Is the app already installed on the device? If yes try to manually uninstall it.

I have the same problem. The B4A-Bridge status flips between "connected" and "Trying to connect.."
Is it due to my Internet connect or there are other reasons?

 

[KMatle]

Restart your router (on my older router I had to do that from time to time)