--- objectmanager.cpp.orig	2021-03-28 13:38:05 UTC
+++ objectmanager.cpp
@@ -204,7 +204,8 @@ void ObjectManager::removeBlock(QString dev)
     if(!b->hasNoDrive)
         // delete drive only when we are deleting table block or any other non-partition block
         if(!b->bPartition)
-            removeDrive(d->geomName);
+            if(d)
+                removeDrive(d->geomName);
 
     delete b;
 }