diff --git a/xwords4/android/XWords4-dbg/AndroidManifest.xml b/xwords4/android/XWords4-dbg/AndroidManifest.xml
index d12be4963..f414c6e94 100644
--- a/xwords4/android/XWords4-dbg/AndroidManifest.xml
+++ b/xwords4/android/XWords4-dbg/AndroidManifest.xml
@@ -22,7 +22,7 @@
      to come from a domain that you own or have control over. -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.eehouse.android.xw4dbg"
-          android:versionCode="91"
+          android:versionCode="93"
           android:versionName="@string/app_version"
           >
 
diff --git a/xwords4/android/XWords4/AndroidManifest.xml b/xwords4/android/XWords4/AndroidManifest.xml
index b12e53ab3..4b90bc3a8 100644
--- a/xwords4/android/XWords4/AndroidManifest.xml
+++ b/xwords4/android/XWords4/AndroidManifest.xml
@@ -22,7 +22,7 @@
      to come from a domain that you own or have control over. -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.eehouse.android.xw4"
-          android:versionCode="92"
+          android:versionCode="93"
           android:versionName="@string/app_version"
           >
 
diff --git a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BTService.java b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BTService.java
index 76b831b5c..5ad82bec7 100644
--- a/xwords4/android/XWords4/src/org/eehouse/android/xw4/BTService.java
+++ b/xwords4/android/XWords4/src/org/eehouse/android/xw4/BTService.java
@@ -286,6 +286,7 @@ public class BTService extends XWService {
     public static void inviteRemote( Context context, String btAddr, 
                                      NetLaunchInfo nli )
     {
+        Assert.assertTrue( null != btAddr && 0 < btAddr.length() );
         Intent intent = getIntentTo( context, BTAction.INVITE );
         String nliData = nli.toString();
         intent.putExtra( GAMEDATA_KEY, nliData );
@@ -311,16 +312,20 @@ public class BTService extends XWService {
                                   CommsAddrRec targetAddr, int gameID )
     {
         int nSent = -1;
-        if ( null != targetAddr ) {
-            String btAddr = getSafeAddr( targetAddr );
+        Assert.assertNotNull( targetAddr );
+        String btAddr = getSafeAddr( targetAddr );
+        if ( null != btAddr && 0 < btAddr.length() ) {
             Intent intent = getIntentTo( context, BTAction.SEND );
             intent.putExtra( MSG_KEY, buf );
             intent.putExtra( ADDR_KEY, btAddr );
             intent.putExtra( GAMEID_KEY, gameID );
             context.startService( intent );
             nSent = buf.length;
-        } else {
-            DbgUtils.logf( "BTService.enqueueFor(): targetAddr is null" );
+        }
+
+        if ( -1 == nSent ) {
+            DbgUtils.logf( "BTService.enqueueFor(): can't send to %s",
+                           targetAddr.bt_hostName );
         }
         return nSent;
     }