Supply more information to network-related exceptions

nova/src/main/kotlin/xyz/xenondevs/nova/world/block/tileentity/network/NetworkCluster.kt

@@ -55,6 +55,10 @@ class NetworkCluster(val uuid: UUID, val networks: List<Network<*>>) {
         }
     }
 
+    override fun toString(): String {
+        return "NetworkCluster(uuid=$uuid, networks=$networks)"
+    }
+
 }
 
 /**

nova/src/main/kotlin/xyz/xenondevs/nova/world/block/tileentity/network/type/energy/EnergyNetwork.kt

@@ -223,6 +223,10 @@ class EnergyNetwork internal constructor(
     private val EnergyHolder.fillFrac: Double
         get() = energy.toDouble() / maxEnergy.toDouble()
 
+    override fun toString(): String {
+        return "EnergyNetwork(nodes=$nodes)"
+    }
+
     companion object {
 
         private val ENERGY_NETWORK = MAIN_CONFIG.node("network", "energy")

nova/src/main/kotlin/xyz/xenondevs/nova/world/block/tileentity/network/type/fluid/FluidNetwork.kt

@@ -84,6 +84,10 @@ class FluidNetwork internal constructor(
         }
     }
 
+    override fun toString(): String {
+        return "FluidNetwork(nodes=$nodes)"
+    }
+
     companion object {
 
         private val FLUID_NETWORK = MAIN_CONFIG.node("network", "fluid")

nova/src/main/kotlin/xyz/xenondevs/nova/world/block/tileentity/network/type/item/ItemNetwork.kt

@@ -69,6 +69,10 @@ class ItemNetwork internal constructor(
         } while (transfersLeft != 0 && nextChannel != startingChannel)
     }
 
+    override fun toString(): String {
+        return "ItemNetwork(nodes=$nodes)"
+    }
+
     companion object {
 
         private val ITEM_NETWORK = MAIN_CONFIG.node("network", "item")

nova/src/main/kotlin/xyz/xenondevs/nova/world/format/NetworkState.kt

@@ -169,12 +169,14 @@ class NetworkState internal constructor(
         if (!file.exists())
             return null
 
-        val network = file.inputStream().buffered().use { inp ->
-            val reader = ByteReader.fromStream(inp)
-            ProtoNetwork.read(networkId, world, this, reader)
+        try {
+            return file.inputStream().buffered().use { inp ->
+                val reader = ByteReader.fromStream(inp)
+                ProtoNetwork.read(networkId, world, this, reader)
+            }
+        } catch (e: Exception) {
+            throw Exception("Failed to load network from file $file", e)
         }
-
-        return network
     }
 
     /**