diff --git a/basicswap/__init__.py b/basicswap/__init__.py
index 9953fb3..92b8429 100644
--- a/basicswap/__init__.py
+++ b/basicswap/__init__.py
@@ -1,3 +1,3 @@
 name = "basicswap"
 
-__version__ = "0.11.37"
+__version__ = "0.11.38"
diff --git a/basicswap/basicswap.py b/basicswap/basicswap.py
index 1d59836..779975b 100644
--- a/basicswap/basicswap.py
+++ b/basicswap/basicswap.py
@@ -39,6 +39,7 @@ from . import __version__
 from .rpc_xmr import make_xmr_rpc2_func
 from .util import (
     TemporaryError,
+    InactiveCoin,
     AutomationConstraint,
     format_amount,
     format_timestamp,
@@ -473,11 +474,21 @@ class BasicSwap(BaseApp):
         raise ValueError('Failed to select a working XMR daemon url.')
 
     def ci(self, coin):  # Coin interface
+        use_coinid = coin
+        interface_ind = 'interface'
         if coin == Coins.PART_ANON:
-            return self.coin_clients[Coins.PART]['interface_anon']
+            use_coinid = Coins.PART
+            interface_ind = 'interface_anon'
         if coin == Coins.PART_BLIND:
-            return self.coin_clients[Coins.PART]['interface_blind']
-        return self.coin_clients[coin]['interface']
+            use_coinid = Coins.PART
+            interface_ind = 'interface_blind'
+
+        if use_coinid not in self.coin_clients:
+            raise ValueError('Unknown coinid {}'.format(int(coin)))
+        if interface_ind not in self.coin_clients[use_coinid]:
+            raise InactiveCoin(int(coin))
+
+        return self.coin_clients[use_coinid][interface_ind]
 
     def createInterface(self, coin):
         if coin == Coins.PART:
@@ -4996,6 +5007,8 @@ class BasicSwap(BaseApp):
             if msg_type == MessageTypes.OFFER_REVOKE:
                 self.processOfferRevoke(msg)
 
+        except InactiveCoin as ex:
+            self.log.info('Ignoring message involving inactive coin {}, type {}'.format(Coins(ex.coinid).name, MessageTypes(msg_type).name))
         except Exception as ex:
             self.log.error('processMsg %s', str(ex))
             if self.debug:
diff --git a/basicswap/util/__init__.py b/basicswap/util/__init__.py
index 49fe09e..44eb033 100644
--- a/basicswap/util/__init__.py
+++ b/basicswap/util/__init__.py
@@ -25,6 +25,13 @@ class AutomationConstraint(ValueError):
     pass
 
 
+class InactiveCoin(Exception):
+    def __init__(self, coinid):
+        self.coinid = coinid
+    def __str__(self):
+        return str(self.coinid)
+
+
 def ensure(v, err_string):
     if not v:
         raise ValueError(err_string)