Bobris
diff --git a/‎BTDB/BTDB.csproj
+2-1 b/‎BTDB/BTDB.csproj
+2-1
diff --git a/‎BTDB/BTreeLib/Cursor12.cs
+2-2 b/‎BTDB/BTreeLib/Cursor12.cs
+2-2
@@ -27,7 +27,8 @@
         <RepositoryType>git</RepositoryType>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Microsoft.Extensions.Primitives" Version="8.0.0"/>
+        <PackageReference Include="Microsoft.Extensions.ObjectPool" Version="9.0.0"/>
+        <PackageReference Include="Microsoft.Extensions.Primitives" Version="9.0.0"/>
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All"/>
         <ProjectReference Include="../BTDB.SourceGenerator/BTDB.SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false"/>
         <None Include="../README.md" Pack="true" PackagePath="/"/>
 
@@ -28,11 +28,11 @@ public Cursor12(RootNode12 rootNode)
     public void SetNewRoot(IRootNode artRoot)
     {
         var newRoot = (RootNode12)artRoot;
-        if (newRoot.Impl != _rootNode.Impl)
-            throw new ArgumentException("SetNewRoot allows only same db instance");
         _rootNode = (RootNode12)artRoot;
         if (_stack.Count > 0)
         {
+            if (newRoot.Impl != _rootNode.Impl)
+                throw new ArgumentException("SetNewRoot allows only same db instance");
             _stack[0]._node = _rootNode.Root;
         }
     }
Original file line number	Diff line number	Diff line change
`@@ -28,11 +28,11 @@ public Cursor12(RootNode12 rootNode)`
`28`	`28`	`public void SetNewRoot(IRootNode artRoot)`
`29`	`29`	`{`
`30`	`30`	`var newRoot = (RootNode12)artRoot;`
`31`		`- if (newRoot.Impl != _rootNode.Impl)`
`32`		`- throw new ArgumentException("SetNewRoot allows only same db instance");`
`33`	`31`	`_rootNode = (RootNode12)artRoot;`
`34`	`32`	`if (_stack.Count > 0)`
`35`	`33`	`{`
	`34`	`+ if (newRoot.Impl != _rootNode.Impl)`
	`35`	`+ throw new ArgumentException("SetNewRoot allows only same db instance");`
`36`	`36`	`_stack[0]._node = _rootNode.Root;`
`37`	`37`	`}`
`38`	`38`	`}`