[Bug 37607] New: MyHeritage Family Tree Builder fails to add "window" item/initialize scripting engine

https://bugs.winehq.org/show_bug.cgi?id=37607

Bug ID: 37607
           Summary: MyHeritage Family Tree Builder fails to add "window"
                    item/initialize scripting engine
           Product: Wine
           Version: 1.7.31
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: jscript
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

(Originally reported here:
https://github.com/wine-compholio/wine-staging/issues/187)

After starting the main application first login with your account. Registration
is free, but required unfortunately. Register via the website to workaround an
issue with the application registration form - make sure that no '+' signs are
in your email address, registration works, but login not...

Create a new project, create a new family, and click on Reports -> Ancestors.

A few message boxes will show up with content

'Unable to add "window" item'
'Unable to initialize scripting engine'

These message boxes repeat a couple of times, and afterwards an empty report
shows up.

Related terminal output with WINEDEBUG=+jscript:

--- snip ---
003f:trace:jscript:DllMain (0x7cb70000 1 (nil))
003f:trace:jscript:DllGetClassObject (CLSID_JScript
{00000001-0000-0000-c000-000000000046} 0xc5de4b8)
003f:trace:jscript:ClassFactory_QueryInterface (0x7cbfeef0)->(IID_IClassFactory
0xc5de4b8)
003f:trace:jscript:ClassFactory_AddRef (0x7cbfeef0)
003f:trace:jscript:JScriptFactory_CreateInstance ((nil)
{bb1a2ae1-a4f9-11cf-8f20-00805f2cd064} 0x26c9bb8)
003f:trace:jscript:JScript_QueryInterface (0xb39e270)->(IID_IActiveScript
0x26c9bb8)
003f:trace:jscript:JScript_AddRef (0xb39e270) ref=2
003f:trace:jscript:JScript_Release (0xb39e270) ref=1
003f:trace:jscript:ClassFactory_Release (0x7cbfeef0)
003f:trace:jscript:JScript_SetScriptSite (0xb39e270)->(0x26c9bc0)
003f:trace:jscript:JScript_AddNamedItem (0xb39e270)->(L"window" 2)
003f:trace:msgbox:MSGBOX_OnInit L"Unable to add "window" item\n"
003f:trace:msgbox:MSGBOX_OnInit L"Unable to initialize scripting engine"
--- snip ---

JScript_AddNamedItem fails because This->ctx == NULL.

Installing native 'jscript' via 'winetricks jscript' works around this issue
and the report shows up properly (wasn't able to compare it with Windows, but
definitely looks better than before).

$ git describe origin/master
wine-1.7.31-88-g9a68ef4

$ sha1sum family_tree_builder_7138.exe
74245c94089642d65b2fde09fd7188430df68b81  family_tree_builder_7138.exe