[Bug 35898] 64-bit PDF-XChange Viewer 2.5.x crashes when searching in a PDF document

https://bugs.winehq.org/show_bug.cgi?id=35898

--- Comment #11 from Graham  ---
(In reply to Graham from comment #10)
> PDFXchange Viewer Portable v2.5 build 322.8 (Jan 24 2018) under Wine
> 1.6.2-0ubuntu14.2 amd64 (actually Linux Mint 18.3) doesn't seem to crash any
> more when searching for text in a PDF. It used to succeed in finding the
> first instance, then crash when you clicked the "next" button. This no loner
> happens.
>
> I can't tell whether I have 32-bit or 64-bit version installed- anyone know
> how I find out?

I have ~/.wine/drive_c/windows/syswow64, and
$ grep arch= ~/.wine/*.reg
/home/graham/.wine/system.reg:#arch=win64
/home/graham/.wine/userdef.reg:#arch=win64

So I guess, I am using the 64-bit version.