Fammi vedere l'errore che ti segnala
Ecco:
Error occurred on line: 359 (Contatto)
java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.CALL dat=tel:xxxxxxxxxx flg=0x20000 cmp=com.android.server.telecom/.components.UserCallActivity } from ProcessRecord{9fc146a 13352:b4a.personaltools/u0a250} (pid=13352, uid=10250) with revoked permission android.permission.CALL_PHONE
at android.os.Parcel.createExceptionOrNull(Parcel.java:2385)
at android.os.Parcel.createException(Parcel.java:2369)
at android.os.Parcel.readException(Parcel.java:2352)
at android.os.Parcel.readException(Parcel.java:2294)
at android.app.IActivityTaskManager$Stub$Proxy.startActivity(IActivityTaskManager.java:4276)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1723)
at android.app.Activity.startActivityForResult(Activity.java:5377)
at android.app.Activity.startActivityForResult(Activity.java:5335)
at android.app.Activity.startActivity(Activity.java:5721)
at android.app.Activity.startActivity(Activity.java:5674)
at anywheresoftware.b4a.keywords.Common.StartActivity(Common.java:857)
at b4a.personaltools.contatto._ltel_longclick(contatto.java:1314)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
at anywheresoftware.b4a.objects.ViewWrapper$2.onLongClick(ViewWrapper.java:90)
at android.view.View.performLongClickInternal(View.java:8240)