IDE exception when trying to register an .NET assembly

Hello folks,

I'm trying to register a .net assembly in Delphi Berlin 10.1 using Components -> Import Component -> Import .NET Assembly but I get an IDE exception: "'{}' is not a valid GUID value"

Can anyone help? Starting the IDE as admin didn't help...

Here is the full stack trace:

thread $364 (TScanThread):
50090069 +019 rtl240.bpl     System.SysUtils  5538   +1 ConvertErrorFmt
500900d5 +01d rtl240.bpl     System.SysUtils  5658   +1 InvalidGUID
50090180 +030 rtl240.bpl     System.SysUtils  5683   +1 StringToGUID
0a1801b1 +1d5 asmview240.bpl Assembly         1064  +45 TTypeObject.Create
0a184601 +02d asmview240.bpl Assembly         3202   +1 TInterface.Create
0a185e1b +5d3 asmview240.bpl Assembly         4012 +124 TAssembly.Open
0a185716 +162 asmview240.bpl Assembly         3824  +41 TAssembly.LoadFromFile
51c7b5a5 +055 comcore240.bpl ImportAssembly    295   +6 TAssemblySelectionManager.OpenFile
51c7b3fc +068 comcore240.bpl ImportAssembly    260   +8 TAssemblySelectionManager.GetItems
209586fb +07f coreide240.bpl ItemsWizardPage   373  +10 TScanThread.Execute
5985ab07 +02b madExcept_.bpl madExcept                  HookedTThreadExecute
5016ce15 +049 rtl240.bpl     System.Classes  14701  +18 ThreadProc
50061888 +028 rtl240.bpl     System          23825  +45 ThreadWrapper
5985a9ed +00d madExcept_.bpl madExcept                  CallThreadProcSafe
5985aa52 +032 madExcept_.bpl madExcept                  ThreadExceptFrame
771d8742 +022 KERNEL32.DLL                              BaseThreadInitThunk
>> created by main thread ($7bc) at:
2095863b +08b coreide240.bpl ItemsWizardPage   348   +7 TSelectionItemHolder.Create