[Bug 50007] New: NCLauncher2 crashes after login: System.NullReferenceException

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50007

Bug ID: 50007
           Summary: NCLauncher2 crashes after login:
                    System.NullReferenceException
           Product: Wine-staging
           Version: 5.19
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
      Distribution: ---

Created attachment 68414
  --> https://bugs.winehq.org/attachment.cgi?id=68414
Console logs

As an attempt to play Aion (NA version), I tried to install the NCLauncher2.
Based on the information available here:
https://support.aiononline.com/hc/en-us/articles/360049020131-Installation-I...,
I have installed the following in a fresh 64bit wine prefix:

winetricks dotnet462 corefonts d3dx9

(d3dx9 is needed for the game itself, not the launcher)

On successful login, the IP address of the user is verified. If a new IP is
detected, NCSoft requires to validate the new location (and offers to save it),
by sending a digit code to the mail address corresponding.

The crash occurs if the correct code is provided.