Yes, I made a thread a while ago saying that I couldn't get MO 3.0 to work at all, and nothing's changed since then. When I click 'launch Mental Omega' I get the message:
***FATAL*** String Manager failed to initilaized (sic) properly
- Yuri's revenge works perfectly on it's own without the mod.
- I've done 6 (yes, literally 6) clean reinstalls of Red Alert 2, Yuri's Revenge and the mod itself.
- I've tried running YURI.exe, RA2md.exe and RA2.exe as an administrator.
- I've tried running YURI.exe, RA2md.exe and RA2.exe in every combination of compatibility modes.
- I've tried running the mod launcher as an administrator and in every compatibility mode.
- I'm running 64bit Windows 7 (which as previously stated does run vanilla Yuri's Revenge perfectly).
I will literally send 20 quid (or the equivalent in your local currency) to the paypal account of whoever gives me advice that gets this working.