https://bugs.winehq.org/show_bug.cgi?id=53904
--- Comment #2 from Drew Ridley drew.ridley03@gmail.com --- I am trying to run the FSDT installer from FSDreamTeam. I am running it under the same wine prefix as microsoft flight simulator to install an addon.
Unfortunately, reproduction might be difficult as the issue only occurs after installing Microsoft Flight Simulator, inserting a valid license key and hitting install. It unfortunately hangs on this error and does not continue the installation. That being said, I do have more information after running the program with 'PROTON_LOG=1'.
Downloading from http://update.virtualisoftware.com/setup [0000049c:] EXCEPTION handling: System.ArgumentException: Propagation flags need inheritance flags. Parameter name: propagationFlags Error Propagation flags need inheritance flags. Parameter name: propagationFlags trying to create package folder [0000049c:] EXCEPTION handling: System.ArgumentException: Propagation flags need inheritance flags. Parameter name: propagationFlags [0000049c:] EXCEPTION handling: System.ArgumentException: Propagation flags need inheritance flags. Parameter name: propagationFlags [0000049c:] EXCEPTION handling: System.InvalidCastException: Specified cast is not valid. [0000049c:] EXCEPTION handling: System.InvalidCastException: Specified cast is not valid.