Radzen is failing to create a working application

when trying to build a new application and before connecting to a database or doing anything else i get the following errors:
D:\CRM\CRM1\Program.cs(2,11): error CS0234: The type or namespace name 'Components' does not exist in the namespace 'CRM' (are you missing an assembly reference?)
D:\CRM\CRM1\Program.cs(23,24): error CS0246: The type or namespace name 'App' could not be found (are you missing a using directive or an assembly reference?)
this is not the behavior I am accustomed to....

Are you using a preview version of the .NET SDK? What is the output of dotnet --info? Also is the database named as the application? This would lead to nested namespaces with the same name which is likely to fail.

yes I am using a preview of .net sdk.
I did not include any database, it is a barebone app.

Indeed preview SDKs don't work in some cases (mostly new applications). This is why Radzen Blazor Studio warns you during startup and explicitly asks you to allow preview versions.

I allowed preview versions but still it didn't work: it still produces these errors

It won't work with a preview. This is why we warn the users.