https://bugs.winehq.org/show_bug.cgi?id=49489
--- Comment #7 from GloriousEggroll@gmail.com --- Regarding this bug:
There are actually 3 bugs in this case after further investigation.
1) The first bug should be the focus, which is the locale issue resolved by the patch attached.
2) The second bug is the launcher rendering all black in wined3d mode which is this bug: https://bugs.winehq.org/show_bug.cgi?id=44985
and can be worked around with WINEDLLOVERRIDES="libglesv2=d"
3) The 3rd bug is the game not rendering in wined3d and giving the popup error attached. I've opened a separate bug for this:
https://bugs.winehq.org/show_bug.cgi?id=49517
I've gone ahead also and taken maintainership of the WineHQ Warframe entry and attached these bugs.
I've also submitted the patch upstream.
After the patch is upstreamed or staged, this specific bug can be closed.