Trying to get mumble-overlay to work with Wine applications

[Phyrexus]

Also, my first post.

I've been having trouble getting mumble-overlay to work with wine applications, though now it's giving me problems when I try to run it through glxgears:

~/Desktop $ mumble-overlay glxgears
set
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
X Error of failed request: GLXBadDrawable
Major opcode of failed request: 153 (GLX)
Minor opcode of failed request: 29 (X_GLXGetDrawableAttributes)
Serial number of failed request: 34
Current serial number in output stream: 34

And when I run something with it in wine:

~/Desktop $ WINEPREFIX=~/wine_games/wine-eve/ mumble-overlay wine "C:\Program Files (x86)\CCP\EVE\bin\ExeFile.exe"
set
set
32-bit libmumble.so.1 not found

There is a symlink of /usr/lib32/libmumble.so.1 to /usr/lib/libmumble.so.1

I'm not sure what the problem could be here, any help would be much appreciated!

EDIT: I'm using version 1.2.3-349-g315b5f5-2ubuntu2 from synaptic in Linux Mint 14, and glxgears and Wine applications both work normally if run without the overlay.